./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/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_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/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_38de5457-29fe-4ff3-8a9a-03b5203254f2/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 7e9492584c051c945baa3a1de8b03a2c00614fb076a66c88b26b81461b005eeb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:04,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:04,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:06:04,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:04,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:04,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:04,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:04,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:04,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:04,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:04,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:04,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:04,326 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:04,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:04,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:04,328 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:04,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:04,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:04,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:04,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:04,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:04,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:04,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:06:04,333 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:04,334 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:04,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:04,335 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:04,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:04,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:04,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:04,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:04,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:04,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:04,339 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:04,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:04,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:04,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:04,341 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:04,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:04,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:04,342 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:04,343 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_38de5457-29fe-4ff3-8a9a-03b5203254f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e9492584c051c945baa3a1de8b03a2c00614fb076a66c88b26b81461b005eeb [2023-11-19 08:06:04,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:04,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:04,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:04,654 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:04,655 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:04,656 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2023-11-19 08:06:07,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:08,068 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:08,069 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2023-11-19 08:06:08,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/data/bbd771a82/02785eb8db014e93a6a8853100fcdf95/FLAG1c17a8a1b [2023-11-19 08:06:08,091 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/data/bbd771a82/02785eb8db014e93a6a8853100fcdf95 [2023-11-19 08:06:08,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:08,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:08,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:08,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:08,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:08,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b25a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08, skipping insertion in model container [2023-11-19 08:06:08,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,133 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:08,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:08,377 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:08,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:08,409 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:08,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08 WrapperNode [2023-11-19 08:06:08,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:08,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:08,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:08,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:08,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,454 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2023-11-19 08:06:08,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:08,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:08,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:08,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:08,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,498 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:08,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:08,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:08,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:08,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:08,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:08,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:08,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:06:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:06:08,637 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:08,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:09,079 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:09,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:09,090 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:06:09,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:09 BoogieIcfgContainer [2023-11-19 08:06:09,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:09,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:09,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:09,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:09,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:08" (1/3) ... [2023-11-19 08:06:09,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b18bc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:09, skipping insertion in model container [2023-11-19 08:06:09,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (2/3) ... [2023-11-19 08:06:09,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b18bc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:09, skipping insertion in model container [2023-11-19 08:06:09,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:09" (3/3) ... [2023-11-19 08:06:09,107 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound1.c [2023-11-19 08:06:09,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:09,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-19 08:06:09,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:09,178 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;@6abe7e38, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:09,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-19 08:06:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 62 states have (on average 1.8387096774193548) internal successors, (114), 106 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 08:06:09,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:09,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:06:09,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:09,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 889512265, now seen corresponding path program 1 times [2023-11-19 08:06:09,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:09,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866935960] [2023-11-19 08:06:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866935960] [2023-11-19 08:06:09,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:09,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942262439] [2023-11-19 08:06:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:09,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:06:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:06:09,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:09,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942262439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:09,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:09,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:09,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707898247] [2023-11-19 08:06:09,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:09,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:09,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:09,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:09,525 INFO L87 Difference]: Start difference. First operand has 111 states, 62 states have (on average 1.8387096774193548) internal successors, (114), 106 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:09,578 INFO L93 Difference]: Finished difference Result 218 states and 238 transitions. [2023-11-19 08:06:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 08:06:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:09,590 INFO L225 Difference]: With dead ends: 218 [2023-11-19 08:06:09,591 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 08:06:09,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 08:06:09,599 INFO L413 NwaCegarLoop]: 116 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, 116 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 08:06:09,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 08:06:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-19 08:06:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 57 states have (on average 1.8421052631578947) internal successors, (105), 100 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2023-11-19 08:06:09,666 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 6 [2023-11-19 08:06:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:09,667 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2023-11-19 08:06:09,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2023-11-19 08:06:09,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 08:06:09,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:09,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 08:06:09,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:06:09,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:06:09,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:09,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash 889568358, now seen corresponding path program 1 times [2023-11-19 08:06:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956313102] [2023-11-19 08:06:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:10,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:10,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956313102] [2023-11-19 08:06:10,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956313102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:10,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:10,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:10,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214050011] [2023-11-19 08:06:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:10,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:10,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:10,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:10,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:10,004 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:10,078 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2023-11-19 08:06:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:10,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 08:06:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:10,083 INFO L225 Difference]: With dead ends: 123 [2023-11-19 08:06:10,083 INFO L226 Difference]: Without dead ends: 108 [2023-11-19 08:06:10,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:10,085 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 4 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:10,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 308 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-19 08:06:10,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-19 08:06:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 61 states have (on average 1.7868852459016393) internal successors, (109), 104 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2023-11-19 08:06:10,107 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 6 [2023-11-19 08:06:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:10,108 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2023-11-19 08:06:10,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2023-11-19 08:06:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 08:06:10,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:10,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:10,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:06:10,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:10,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1182784684, now seen corresponding path program 1 times [2023-11-19 08:06:10,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290259000] [2023-11-19 08:06:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,141 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:10,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365583368] [2023-11-19 08:06:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:10,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:10,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:10,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:06:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:06:10,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:10,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:10,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:10,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290259000] [2023-11-19 08:06:10,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:10,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365583368] [2023-11-19 08:06:10,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365583368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:10,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:10,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:10,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611377790] [2023-11-19 08:06:10,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:10,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:10,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:10,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:10,447 INFO L87 Difference]: Start difference. First operand 108 states and 113 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:10,916 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2023-11-19 08:06:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:10,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 08:06:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:10,920 INFO L225 Difference]: With dead ends: 156 [2023-11-19 08:06:10,920 INFO L226 Difference]: Without dead ends: 145 [2023-11-19 08:06:10,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:10,923 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 175 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:10,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 157 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-19 08:06:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 131. [2023-11-19 08:06:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 125 states have internal predecessors, (142), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:06:10,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2023-11-19 08:06:10,947 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 9 [2023-11-19 08:06:10,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:10,947 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2023-11-19 08:06:10,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2023-11-19 08:06:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 08:06:10,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:10,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:10,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 08:06:11,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:11,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1988380403, now seen corresponding path program 1 times [2023-11-19 08:06:11,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:11,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724422249] [2023-11-19 08:06:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:11,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:11,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423790171] [2023-11-19 08:06:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:11,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:11,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:11,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:11,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:06:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:11,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:06:11,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:11,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:11,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:11,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724422249] [2023-11-19 08:06:11,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:11,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423790171] [2023-11-19 08:06:11,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423790171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:11,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:11,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771082466] [2023-11-19 08:06:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:11,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:11,380 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:11,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:11,788 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2023-11-19 08:06:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 08:06:11,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:11,791 INFO L225 Difference]: With dead ends: 195 [2023-11-19 08:06:11,791 INFO L226 Difference]: Without dead ends: 177 [2023-11-19 08:06:11,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:11,793 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 188 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:11,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 146 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-19 08:06:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 157. [2023-11-19 08:06:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 111 states have (on average 1.6306306306306306) internal successors, (181), 150 states have internal predecessors, (181), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 08:06:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 191 transitions. [2023-11-19 08:06:11,812 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 191 transitions. Word has length 10 [2023-11-19 08:06:11,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:11,813 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 191 transitions. [2023-11-19 08:06:11,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 191 transitions. [2023-11-19 08:06:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 08:06:11,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:11,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:11,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:12,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:12,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:12,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1510250290, now seen corresponding path program 1 times [2023-11-19 08:06:12,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:12,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396683731] [2023-11-19 08:06:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:12,057 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [818546777] [2023-11-19 08:06:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:12,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:12,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:12,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:06:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:12,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 08:06:12,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:12,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:12,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:12,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396683731] [2023-11-19 08:06:12,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:12,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818546777] [2023-11-19 08:06:12,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818546777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:12,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:12,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:12,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090423973] [2023-11-19 08:06:12,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:12,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:12,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:12,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:12,305 INFO L87 Difference]: Start difference. First operand 157 states and 191 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:12,708 INFO L93 Difference]: Finished difference Result 168 states and 198 transitions. [2023-11-19 08:06:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:12,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 08:06:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:12,710 INFO L225 Difference]: With dead ends: 168 [2023-11-19 08:06:12,711 INFO L226 Difference]: Without dead ends: 167 [2023-11-19 08:06:12,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:12,712 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 149 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:12,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 164 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:06:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-19 08:06:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2023-11-19 08:06:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 111 states have (on average 1.6216216216216217) internal successors, (180), 150 states have internal predecessors, (180), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 08:06:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2023-11-19 08:06:12,735 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 11 [2023-11-19 08:06:12,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:12,735 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2023-11-19 08:06:12,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2023-11-19 08:06:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 08:06:12,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:12,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:12,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:12,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:12,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:12,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:12,958 INFO L85 PathProgramCache]: Analyzing trace with hash 426881327, now seen corresponding path program 1 times [2023-11-19 08:06:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310971692] [2023-11-19 08:06:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:12,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:12,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242895125] [2023-11-19 08:06:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:12,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:12,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:12,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:06:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:13,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 08:06:13,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:13,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:13,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:13,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:13,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310971692] [2023-11-19 08:06:13,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:13,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242895125] [2023-11-19 08:06:13,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242895125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:13,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:13,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:13,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236787964] [2023-11-19 08:06:13,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:13,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:13,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:13,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:13,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:13,193 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:13,637 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2023-11-19 08:06:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 08:06:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:13,639 INFO L225 Difference]: With dead ends: 172 [2023-11-19 08:06:13,640 INFO L226 Difference]: Without dead ends: 169 [2023-11-19 08:06:13,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:13,641 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 174 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:13,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 158 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-19 08:06:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 157. [2023-11-19 08:06:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 111 states have (on average 1.5855855855855856) internal successors, (176), 150 states have internal predecessors, (176), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 08:06:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2023-11-19 08:06:13,655 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 12 [2023-11-19 08:06:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:13,656 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2023-11-19 08:06:13,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2023-11-19 08:06:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 08:06:13,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:13,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:13,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:13,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:13,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:13,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:13,882 INFO L85 PathProgramCache]: Analyzing trace with hash 348419312, now seen corresponding path program 1 times [2023-11-19 08:06:13,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:13,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762033254] [2023-11-19 08:06:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:13,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:13,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:13,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577379256] [2023-11-19 08:06:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:13,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:13,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:13,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:06:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:13,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:13,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:13,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:13,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:13,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762033254] [2023-11-19 08:06:13,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:13,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577379256] [2023-11-19 08:06:13,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577379256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:13,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292825108] [2023-11-19 08:06:13,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:13,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:13,998 INFO L87 Difference]: Start difference. First operand 157 states and 186 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:14,451 INFO L93 Difference]: Finished difference Result 269 states and 306 transitions. [2023-11-19 08:06:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:14,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 08:06:14,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:14,454 INFO L225 Difference]: With dead ends: 269 [2023-11-19 08:06:14,454 INFO L226 Difference]: Without dead ends: 268 [2023-11-19 08:06:14,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 08:06:14,455 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 85 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:14,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 168 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-19 08:06:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 181. [2023-11-19 08:06:14,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 134 states have (on average 1.5970149253731343) internal successors, (214), 173 states have internal predecessors, (214), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:06:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 226 transitions. [2023-11-19 08:06:14,471 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 226 transitions. Word has length 13 [2023-11-19 08:06:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:14,471 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 226 transitions. [2023-11-19 08:06:14,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 226 transitions. [2023-11-19 08:06:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 08:06:14,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:14,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:14,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:14,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:14,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:14,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2083903151, now seen corresponding path program 1 times [2023-11-19 08:06:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37670531] [2023-11-19 08:06:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:14,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112240790] [2023-11-19 08:06:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:14,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:14,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:14,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:06:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:14,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:14,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:14,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:14,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37670531] [2023-11-19 08:06:14,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112240790] [2023-11-19 08:06:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112240790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:14,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:14,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:14,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545708820] [2023-11-19 08:06:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:14,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:14,821 INFO L87 Difference]: Start difference. First operand 181 states and 226 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:15,099 INFO L93 Difference]: Finished difference Result 268 states and 304 transitions. [2023-11-19 08:06:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:15,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 08:06:15,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:15,102 INFO L225 Difference]: With dead ends: 268 [2023-11-19 08:06:15,102 INFO L226 Difference]: Without dead ends: 267 [2023-11-19 08:06:15,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 08:06:15,105 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 114 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:15,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 166 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:06:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-19 08:06:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 181. [2023-11-19 08:06:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 134 states have (on average 1.5820895522388059) internal successors, (212), 173 states have internal predecessors, (212), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:06:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 224 transitions. [2023-11-19 08:06:15,122 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 224 transitions. Word has length 14 [2023-11-19 08:06:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:15,123 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 224 transitions. [2023-11-19 08:06:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 224 transitions. [2023-11-19 08:06:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 08:06:15,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:15,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 08:06:15,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:15,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:15,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:15,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:15,342 INFO L85 PathProgramCache]: Analyzing trace with hash -854894940, now seen corresponding path program 1 times [2023-11-19 08:06:15,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:15,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198177511] [2023-11-19 08:06:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:15,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:15,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:15,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516786397] [2023-11-19 08:06:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:15,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:15,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:15,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:15,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:06:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:15,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:06:15,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:15,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:15,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:15,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198177511] [2023-11-19 08:06:15,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:15,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516786397] [2023-11-19 08:06:15,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516786397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:15,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:15,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:15,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135526269] [2023-11-19 08:06:15,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:15,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:15,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:15,468 INFO L87 Difference]: Start difference. First operand 181 states and 224 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:15,520 INFO L93 Difference]: Finished difference Result 181 states and 224 transitions. [2023-11-19 08:06:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 08:06:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:15,522 INFO L225 Difference]: With dead ends: 181 [2023-11-19 08:06:15,523 INFO L226 Difference]: Without dead ends: 180 [2023-11-19 08:06:15,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:15,524 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 74 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:15,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 76 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-19 08:06:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-19 08:06:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 134 states have (on average 1.5671641791044777) internal successors, (210), 172 states have internal predecessors, (210), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:06:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 222 transitions. [2023-11-19 08:06:15,535 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 222 transitions. Word has length 28 [2023-11-19 08:06:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:15,536 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 222 transitions. [2023-11-19 08:06:15,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 222 transitions. [2023-11-19 08:06:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 08:06:15,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:15,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 08:06:15,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:15,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 08:06:15,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:15,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:15,763 INFO L85 PathProgramCache]: Analyzing trace with hash -426381197, now seen corresponding path program 1 times [2023-11-19 08:06:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:15,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391967346] [2023-11-19 08:06:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:15,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:15,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573089701] [2023-11-19 08:06:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:15,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:15,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:15,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:15,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:06:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:15,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:06:15,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:15,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:15,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391967346] [2023-11-19 08:06:15,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:15,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573089701] [2023-11-19 08:06:15,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573089701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:15,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160017484] [2023-11-19 08:06:15,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:15,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:15,954 INFO L87 Difference]: Start difference. First operand 180 states and 222 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:16,288 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2023-11-19 08:06:16,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 08:06:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:16,291 INFO L225 Difference]: With dead ends: 249 [2023-11-19 08:06:16,292 INFO L226 Difference]: Without dead ends: 244 [2023-11-19 08:06:16,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 08:06:16,293 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 178 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:16,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 108 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:06:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-19 08:06:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 215. [2023-11-19 08:06:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 168 states have (on average 1.5773809523809523) internal successors, (265), 206 states have internal predecessors, (265), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 08:06:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2023-11-19 08:06:16,310 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 28 [2023-11-19 08:06:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:16,313 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2023-11-19 08:06:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2023-11-19 08:06:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 08:06:16,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:16,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 08:06:16,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:16,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:06:16,533 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:16,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -748037788, now seen corresponding path program 1 times [2023-11-19 08:06:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716308245] [2023-11-19 08:06:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:16,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542159519] [2023-11-19 08:06:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:16,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:16,569 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:16,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:06:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:16,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:16,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:16,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:16,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716308245] [2023-11-19 08:06:16,686 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:16,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542159519] [2023-11-19 08:06:16,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542159519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:16,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:16,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:16,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074849258] [2023-11-19 08:06:16,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:16,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:16,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:16,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:16,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:16,687 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:16,930 INFO L93 Difference]: Finished difference Result 295 states and 355 transitions. [2023-11-19 08:06:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:16,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-19 08:06:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:16,933 INFO L225 Difference]: With dead ends: 295 [2023-11-19 08:06:16,933 INFO L226 Difference]: Without dead ends: 294 [2023-11-19 08:06:16,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 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 08:06:16,934 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 71 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:16,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 215 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:06:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-19 08:06:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 225. [2023-11-19 08:06:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 178 states have (on average 1.5730337078651686) internal successors, (280), 216 states have internal predecessors, (280), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 08:06:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 294 transitions. [2023-11-19 08:06:16,947 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 294 transitions. Word has length 29 [2023-11-19 08:06:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:16,948 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 294 transitions. [2023-11-19 08:06:16,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 294 transitions. [2023-11-19 08:06:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 08:06:16,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:16,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 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 08:06:16,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:06:17,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:17,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash -332915099, now seen corresponding path program 1 times [2023-11-19 08:06:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:17,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716953720] [2023-11-19 08:06:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:17,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845346762] [2023-11-19 08:06:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:17,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:17,193 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:17,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:06:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:17,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:06:17,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:17,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:17,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:17,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716953720] [2023-11-19 08:06:17,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:17,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845346762] [2023-11-19 08:06:17,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845346762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:17,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:17,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:17,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771676338] [2023-11-19 08:06:17,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:17,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:17,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:17,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:17,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:17,330 INFO L87 Difference]: Start difference. First operand 225 states and 294 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:17,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:17,562 INFO L93 Difference]: Finished difference Result 316 states and 391 transitions. [2023-11-19 08:06:17,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:17,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-19 08:06:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:17,565 INFO L225 Difference]: With dead ends: 316 [2023-11-19 08:06:17,565 INFO L226 Difference]: Without dead ends: 311 [2023-11-19 08:06:17,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 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 08:06:17,566 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 232 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:17,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 84 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:06:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-19 08:06:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 267. [2023-11-19 08:06:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 219 states have (on average 1.6164383561643836) internal successors, (354), 257 states have internal predecessors, (354), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 08:06:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 370 transitions. [2023-11-19 08:06:17,582 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 370 transitions. Word has length 29 [2023-11-19 08:06:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:17,583 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 370 transitions. [2023-11-19 08:06:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 370 transitions. [2023-11-19 08:06:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:06:17,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:17,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 08:06:17,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 08:06:17,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:17,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1714334841, now seen corresponding path program 1 times [2023-11-19 08:06:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937433051] [2023-11-19 08:06:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:17,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:17,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894432461] [2023-11-19 08:06:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:17,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:17,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:17,837 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:17,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:06:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:17,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:17,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:17,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:17,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937433051] [2023-11-19 08:06:17,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:17,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894432461] [2023-11-19 08:06:17,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894432461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:17,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:17,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:17,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760743621] [2023-11-19 08:06:17,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:17,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:17,940 INFO L87 Difference]: Start difference. First operand 267 states and 370 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:18,348 INFO L93 Difference]: Finished difference Result 344 states and 444 transitions. [2023-11-19 08:06:18,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:18,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-19 08:06:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:18,352 INFO L225 Difference]: With dead ends: 344 [2023-11-19 08:06:18,352 INFO L226 Difference]: Without dead ends: 343 [2023-11-19 08:06:18,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 08:06:18,353 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 66 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:18,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 216 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-19 08:06:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 269. [2023-11-19 08:06:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 221 states have (on average 1.6108597285067874) internal successors, (356), 259 states have internal predecessors, (356), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 08:06:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 372 transitions. [2023-11-19 08:06:18,368 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 372 transitions. Word has length 30 [2023-11-19 08:06:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:18,368 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 372 transitions. [2023-11-19 08:06:18,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 372 transitions. [2023-11-19 08:06:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:06:18,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:18,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 08:06:18,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:18,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 08:06:18,598 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:18,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:18,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1316264971, now seen corresponding path program 1 times [2023-11-19 08:06:18,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:18,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084583250] [2023-11-19 08:06:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:18,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:18,608 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:18,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960613423] [2023-11-19 08:06:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:18,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:18,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:18,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:18,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 08:06:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:18,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:06:18,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:18,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:18,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:18,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084583250] [2023-11-19 08:06:18,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:18,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960613423] [2023-11-19 08:06:18,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960613423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:18,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:18,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792169718] [2023-11-19 08:06:18,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:18,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:18,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:18,782 INFO L87 Difference]: Start difference. First operand 269 states and 372 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:19,888 INFO L93 Difference]: Finished difference Result 492 states and 671 transitions. [2023-11-19 08:06:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-19 08:06:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:19,892 INFO L225 Difference]: With dead ends: 492 [2023-11-19 08:06:19,892 INFO L226 Difference]: Without dead ends: 484 [2023-11-19 08:06:19,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:19,894 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 377 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:19,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 80 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:06:19,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-11-19 08:06:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 378. [2023-11-19 08:06:19,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 327 states have (on average 1.620795107033639) internal successors, (530), 365 states have internal predecessors, (530), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 08:06:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 552 transitions. [2023-11-19 08:06:19,916 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 552 transitions. Word has length 30 [2023-11-19 08:06:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:19,917 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 552 transitions. [2023-11-19 08:06:19,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 552 transitions. [2023-11-19 08:06:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:06:19,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:19,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 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 08:06:19,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:20,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:06:20,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:20,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:20,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1730433355, now seen corresponding path program 1 times [2023-11-19 08:06:20,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:20,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641362383] [2023-11-19 08:06:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:20,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:20,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:20,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831526882] [2023-11-19 08:06:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:20,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:20,166 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:20,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 08:06:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:20,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:20,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:20,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:20,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641362383] [2023-11-19 08:06:20,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:20,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831526882] [2023-11-19 08:06:20,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831526882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:20,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:20,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032337705] [2023-11-19 08:06:20,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:20,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:20,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:20,279 INFO L87 Difference]: Start difference. First operand 378 states and 552 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:20,818 INFO L93 Difference]: Finished difference Result 433 states and 598 transitions. [2023-11-19 08:06:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:20,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-19 08:06:20,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:20,822 INFO L225 Difference]: With dead ends: 433 [2023-11-19 08:06:20,822 INFO L226 Difference]: Without dead ends: 432 [2023-11-19 08:06:20,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 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 08:06:20,823 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 57 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:20,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 220 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:06:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2023-11-19 08:06:20,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 387. [2023-11-19 08:06:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 336 states have (on average 1.6160714285714286) internal successors, (543), 374 states have internal predecessors, (543), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 08:06:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 565 transitions. [2023-11-19 08:06:20,843 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 565 transitions. Word has length 30 [2023-11-19 08:06:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:20,844 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 565 transitions. [2023-11-19 08:06:20,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 565 transitions. [2023-11-19 08:06:20,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:06:20,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:20,845 INFO L195 NwaCegarLoop]: trace histogram [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 08:06:20,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-19 08:06:21,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:06:21,061 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:21,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash 980995640, now seen corresponding path program 1 times [2023-11-19 08:06:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:21,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125653903] [2023-11-19 08:06:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:21,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667534485] [2023-11-19 08:06:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:21,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:21,079 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:21,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 08:06:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:21,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:06:21,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:21,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:21,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:21,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125653903] [2023-11-19 08:06:21,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:21,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667534485] [2023-11-19 08:06:21,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667534485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:21,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:21,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215268494] [2023-11-19 08:06:21,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:21,184 INFO L87 Difference]: Start difference. First operand 387 states and 565 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:21,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:21,221 INFO L93 Difference]: Finished difference Result 427 states and 610 transitions. [2023-11-19 08:06:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:06:21,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-19 08:06:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:21,223 INFO L225 Difference]: With dead ends: 427 [2023-11-19 08:06:21,223 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 08:06:21,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:21,225 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 54 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:21,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 138 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 08:06:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2023-11-19 08:06:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 77 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2023-11-19 08:06:21,231 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 31 [2023-11-19 08:06:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:21,232 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2023-11-19 08:06:21,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2023-11-19 08:06:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:06:21,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:21,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 08:06:21,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:21,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 08:06:21,452 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:21,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2145458997, now seen corresponding path program 1 times [2023-11-19 08:06:21,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:21,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452662033] [2023-11-19 08:06:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:21,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:21,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524474915] [2023-11-19 08:06:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:21,467 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:21,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 08:06:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:21,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:06:21,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:21,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:21,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:21,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452662033] [2023-11-19 08:06:21,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:21,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524474915] [2023-11-19 08:06:21,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524474915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:21,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:21,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339865511] [2023-11-19 08:06:21,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:21,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:21,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:21,626 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:21,788 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2023-11-19 08:06:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:21,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-19 08:06:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:21,790 INFO L225 Difference]: With dead ends: 84 [2023-11-19 08:06:21,790 INFO L226 Difference]: Without dead ends: 82 [2023-11-19 08:06:21,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:21,791 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 123 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:21,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 54 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:06:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-19 08:06:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-11-19 08:06:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 68 states have (on average 1.161764705882353) internal successors, (79), 75 states have internal predecessors, (79), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:21,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2023-11-19 08:06:21,798 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 31 [2023-11-19 08:06:21,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:21,798 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2023-11-19 08:06:21,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:21,798 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2023-11-19 08:06:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:06:21,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:21,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 08:06:21,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:22,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:06:22,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:22,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2103826329, now seen corresponding path program 1 times [2023-11-19 08:06:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:22,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216880049] [2023-11-19 08:06:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:22,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:22,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732005243] [2023-11-19 08:06:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:22,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:22,014 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:22,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 08:06:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:22,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:22,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:22,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:22,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216880049] [2023-11-19 08:06:22,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:22,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732005243] [2023-11-19 08:06:22,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732005243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:22,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:22,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661272720] [2023-11-19 08:06:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:22,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:22,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:22,110 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:22,247 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2023-11-19 08:06:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:22,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-19 08:06:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:22,249 INFO L225 Difference]: With dead ends: 92 [2023-11-19 08:06:22,249 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 08:06:22,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 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 08:06:22,250 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 36 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:22,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 107 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:06:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 08:06:22,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2023-11-19 08:06:22,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 68 states have (on average 1.1470588235294117) internal successors, (78), 74 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2023-11-19 08:06:22,256 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 31 [2023-11-19 08:06:22,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:22,256 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2023-11-19 08:06:22,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:22,257 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2023-11-19 08:06:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 08:06:22,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:22,257 INFO L195 NwaCegarLoop]: trace histogram [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 08:06:22,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:22,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 08:06:22,458 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:22,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 346093816, now seen corresponding path program 1 times [2023-11-19 08:06:22,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:22,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757526193] [2023-11-19 08:06:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:22,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:22,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535885005] [2023-11-19 08:06:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:22,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:22,470 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:22,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 08:06:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:22,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:06:22,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:22,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:22,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757526193] [2023-11-19 08:06:22,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535885005] [2023-11-19 08:06:22,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535885005] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:22,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:22,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-19 08:06:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165141087] [2023-11-19 08:06:22,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:22,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:06:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:22,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:06:22,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:06:22,679 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:22,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:22,735 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2023-11-19 08:06:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:22,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-11-19 08:06:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:22,737 INFO L225 Difference]: With dead ends: 83 [2023-11-19 08:06:22,737 INFO L226 Difference]: Without dead ends: 82 [2023-11-19 08:06:22,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:06:22,739 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 57 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:22,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 189 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:22,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-19 08:06:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-19 08:06:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 76 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2023-11-19 08:06:22,747 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 32 [2023-11-19 08:06:22,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:22,747 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2023-11-19 08:06:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2023-11-19 08:06:22,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 08:06:22,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:22,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:22,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:22,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:22,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1960786937, now seen corresponding path program 1 times [2023-11-19 08:06:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:22,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468855180] [2023-11-19 08:06:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:22,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:22,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463060716] [2023-11-19 08:06:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:22,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:22,981 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:23,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 08:06:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:23,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:06:23,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:23,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468855180] [2023-11-19 08:06:23,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463060716] [2023-11-19 08:06:23,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463060716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:23,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:23,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:23,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828465515] [2023-11-19 08:06:23,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:23,242 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:23,529 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-11-19 08:06:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-11-19 08:06:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:23,530 INFO L225 Difference]: With dead ends: 94 [2023-11-19 08:06:23,530 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 08:06:23,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:23,531 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 108 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:23,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 63 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:06:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 08:06:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2023-11-19 08:06:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 75 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2023-11-19 08:06:23,540 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 34 [2023-11-19 08:06:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:23,540 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2023-11-19 08:06:23,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2023-11-19 08:06:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 08:06:23,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:23,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:23,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:23,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:23,755 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:23,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:23,756 INFO L85 PathProgramCache]: Analyzing trace with hash 654853049, now seen corresponding path program 1 times [2023-11-19 08:06:23,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:23,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664643640] [2023-11-19 08:06:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:23,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:23,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684420639] [2023-11-19 08:06:23,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:23,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:23,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:23,766 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:23,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 08:06:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:23,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:06:23,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:24,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:24,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:24,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664643640] [2023-11-19 08:06:24,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:24,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684420639] [2023-11-19 08:06:24,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684420639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:24,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:24,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743826637] [2023-11-19 08:06:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:24,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:24,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:24,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:24,024 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:24,272 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2023-11-19 08:06:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-11-19 08:06:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:24,274 INFO L225 Difference]: With dead ends: 93 [2023-11-19 08:06:24,274 INFO L226 Difference]: Without dead ends: 92 [2023-11-19 08:06:24,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:06:24,275 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 122 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:24,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 63 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:06:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-19 08:06:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2023-11-19 08:06:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.0845070422535212) internal successors, (77), 74 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2023-11-19 08:06:24,283 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 35 [2023-11-19 08:06:24,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:24,283 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2023-11-19 08:06:24,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2023-11-19 08:06:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:06:24,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:24,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:24,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:24,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:24,506 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:24,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1174391813, now seen corresponding path program 1 times [2023-11-19 08:06:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:24,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135344097] [2023-11-19 08:06:24,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:24,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:24,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:24,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523819075] [2023-11-19 08:06:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:24,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:24,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:24,516 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:24,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 08:06:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:24,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:24,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:24,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:24,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135344097] [2023-11-19 08:06:24,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:24,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523819075] [2023-11-19 08:06:24,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523819075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:24,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:24,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:24,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301919879] [2023-11-19 08:06:24,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:24,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:24,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:24,624 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:25,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:25,004 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2023-11-19 08:06:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:25,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-19 08:06:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:25,008 INFO L225 Difference]: With dead ends: 91 [2023-11-19 08:06:25,008 INFO L226 Difference]: Without dead ends: 90 [2023-11-19 08:06:25,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 08:06:25,009 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 29 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:25,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 83 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-19 08:06:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2023-11-19 08:06:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 73 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2023-11-19 08:06:25,021 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 36 [2023-11-19 08:06:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:25,022 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2023-11-19 08:06:25,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2023-11-19 08:06:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 08:06:25,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:25,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:25,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:25,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:25,244 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:25,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2046407685, now seen corresponding path program 1 times [2023-11-19 08:06:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918366669] [2023-11-19 08:06:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:25,252 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:25,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704271656] [2023-11-19 08:06:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:25,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:25,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:25,257 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:25,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 08:06:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:25,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:25,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:25,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:25,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:25,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918366669] [2023-11-19 08:06:25,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:25,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704271656] [2023-11-19 08:06:25,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704271656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:25,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:25,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29427139] [2023-11-19 08:06:25,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:25,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:25,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:25,359 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:25,553 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2023-11-19 08:06:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:25,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-11-19 08:06:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:25,554 INFO L225 Difference]: With dead ends: 90 [2023-11-19 08:06:25,555 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 08:06:25,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 08:06:25,555 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 25 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:25,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 91 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:06:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 08:06:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2023-11-19 08:06:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 71 states have (on average 1.056338028169014) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2023-11-19 08:06:25,563 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 37 [2023-11-19 08:06:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:25,564 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2023-11-19 08:06:25,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:06:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2023-11-19 08:06:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 08:06:25,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:25,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:25,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:25,781 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:25,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1426741318, now seen corresponding path program 1 times [2023-11-19 08:06:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:25,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160434149] [2023-11-19 08:06:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:25,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:25,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:25,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198907939] [2023-11-19 08:06:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:25,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:25,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:25,791 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:25,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 08:06:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:25,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 08:06:25,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:06:26,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:26,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160434149] [2023-11-19 08:06:26,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198907939] [2023-11-19 08:06:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198907939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:26,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 08:06:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163761947] [2023-11-19 08:06:26,769 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:26,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:06:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:06:26,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:06:26,771 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:31,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 08:06:33,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 08:06:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:33,885 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2023-11-19 08:06:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:06:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-19 08:06:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:33,888 INFO L225 Difference]: With dead ends: 90 [2023-11-19 08:06:33,888 INFO L226 Difference]: Without dead ends: 73 [2023-11-19 08:06:33,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=67, Invalid=238, Unknown=1, NotChecked=0, Total=306 [2023-11-19 08:06:33,889 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 87 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:33,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 151 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2023-11-19 08:06:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-19 08:06:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2023-11-19 08:06:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 66 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2023-11-19 08:06:33,898 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 41 [2023-11-19 08:06:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:33,898 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2023-11-19 08:06:33,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2023-11-19 08:06:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 08:06:33,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:33,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:33,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:34,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:34,100 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:34,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1254427531, now seen corresponding path program 1 times [2023-11-19 08:06:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:34,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172381703] [2023-11-19 08:06:34,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:34,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:34,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955456999] [2023-11-19 08:06:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:34,113 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:34,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 08:06:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:34,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:06:34,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:06:34,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:34,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:34,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172381703] [2023-11-19 08:06:34,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:34,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955456999] [2023-11-19 08:06:34,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955456999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:34,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:34,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:06:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266984467] [2023-11-19 08:06:34,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:06:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:06:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:06:34,335 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:34,511 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2023-11-19 08:06:34,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2023-11-19 08:06:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:34,517 INFO L225 Difference]: With dead ends: 73 [2023-11-19 08:06:34,518 INFO L226 Difference]: Without dead ends: 58 [2023-11-19 08:06:34,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:06:34,519 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 63 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:34,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 100 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:06:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-19 08:06:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-19 08:06:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2023-11-19 08:06:34,527 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 42 [2023-11-19 08:06:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:34,527 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2023-11-19 08:06:34,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2023-11-19 08:06:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 08:06:34,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:34,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:34,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:34,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 08:06:34,729 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:34,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2073399403, now seen corresponding path program 1 times [2023-11-19 08:06:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355043335] [2023-11-19 08:06:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:34,742 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014794517] [2023-11-19 08:06:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:34,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:34,744 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:34,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 08:06:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:34,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 08:06:34,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:06:36,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:06:45,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355043335] [2023-11-19 08:06:45,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014794517] [2023-11-19 08:06:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014794517] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:45,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2023-11-19 08:06:45,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053447074] [2023-11-19 08:06:45,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:45,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:06:45,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:06:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:06:45,321 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:06:50,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:50,623 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2023-11-19 08:06:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:06:50,623 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2023-11-19 08:06:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:50,624 INFO L225 Difference]: With dead ends: 69 [2023-11-19 08:06:50,624 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 08:06:50,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2023-11-19 08:06:50,625 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 120 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:50,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 127 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 08:06:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 08:06:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-19 08:06:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:06:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2023-11-19 08:06:50,636 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 43 [2023-11-19 08:06:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:50,636 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2023-11-19 08:06:50,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:06:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2023-11-19 08:06:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 08:06:50,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:50,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:50,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 08:06:50,850 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:50,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -149127784, now seen corresponding path program 1 times [2023-11-19 08:06:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:50,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573101149] [2023-11-19 08:06:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:50,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:50,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319678297] [2023-11-19 08:06:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:50,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:50,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:50,863 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:50,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 08:06:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:50,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 08:06:50,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:06:52,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:06:54,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573101149] [2023-11-19 08:06:54,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319678297] [2023-11-19 08:06:54,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319678297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:54,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:54,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2023-11-19 08:06:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314026690] [2023-11-19 08:06:54,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:06:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:06:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:06:54,197 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:06:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:57,684 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2023-11-19 08:06:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:06:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-11-19 08:06:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:57,685 INFO L225 Difference]: With dead ends: 68 [2023-11-19 08:06:57,685 INFO L226 Difference]: Without dead ends: 52 [2023-11-19 08:06:57,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-11-19 08:06:57,687 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 83 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:57,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 103 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 08:06:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-19 08:06:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-19 08:06:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:06:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 51 transitions. [2023-11-19 08:06:57,695 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 51 transitions. Word has length 44 [2023-11-19 08:06:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:57,695 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 51 transitions. [2023-11-19 08:06:57,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:06:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 51 transitions. [2023-11-19 08:06:57,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 08:06:57,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:57,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:57,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-19 08:06:57,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:57,901 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-19 08:06:57,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1968900609, now seen corresponding path program 1 times [2023-11-19 08:06:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:57,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060444323] [2023-11-19 08:06:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:57,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:57,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:57,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878078266] [2023-11-19 08:06:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:57,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:57,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:57,910 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:57,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38de5457-29fe-4ff3-8a9a-03b5203254f2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 08:06:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:57,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 08:06:57,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:07:00,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:02,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060444323] [2023-11-19 08:07:02,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878078266] [2023-11-19 08:07:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878078266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:02,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:02,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 08:07:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333357728] [2023-11-19 08:07:02,937 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:02,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:07:02,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:07:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:07:02,938 INFO L87 Difference]: Start difference. First operand 52 states and 51 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)