./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/hard2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/hard2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya --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 966f2b433cfe84d90040e5149c3cdda56fb59546e621a76bee869282a92c61d4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:24:59,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:24:59,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:24:59,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:24:59,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:24:59,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:24:59,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:24:59,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:24:59,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:24:59,952 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:24:59,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:24:59,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:24:59,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:24:59,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:24:59,955 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:24:59,955 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:24:59,956 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:24:59,956 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:24:59,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:24:59,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:24:59,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:24:59,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:24:59,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:24:59,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:24:59,960 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:24:59,960 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:24:59,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:24:59,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:24:59,962 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:24:59,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:24:59,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:24:59,963 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:24:59,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:24:59,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:24:59,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:24:59,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:24:59,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:24:59,964 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:24:59,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:24:59,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:24:59,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:24:59,965 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:24:59,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:24:59,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:24:59,966 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_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 966f2b433cfe84d90040e5149c3cdda56fb59546e621a76bee869282a92c61d4 [2023-11-28 20:25:00,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:25:00,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:25:00,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:25:00,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:25:00,211 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:25:00,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench/hard2.c [2023-11-28 20:25:02,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:25:03,130 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:25:03,131 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/sv-benchmarks/c/nla-digbench/hard2.c [2023-11-28 20:25:03,138 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/data/59c244a44/0d7c9d78aaa9440cb636493da1c5f092/FLAG60ffcbbe6 [2023-11-28 20:25:03,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/data/59c244a44/0d7c9d78aaa9440cb636493da1c5f092 [2023-11-28 20:25:03,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:25:03,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:25:03,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:25:03,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:25:03,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:25:03,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296a0b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03, skipping insertion in model container [2023-11-28 20:25:03,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:25:03,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:25:03,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:25:03,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:25:03,394 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:25:03,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03 WrapperNode [2023-11-28 20:25:03,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:25:03,396 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:25:03,396 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:25:03,396 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:25:03,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,433 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-11-28 20:25:03,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:25:03,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:25:03,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:25:03,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:25:03,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,482 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2023-11-28 20:25:03,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:25:03,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:25:03,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:25:03,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:25:03,495 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (1/1) ... [2023-11-28 20:25:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:25:03,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:03,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:25:03,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:25:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:25:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:25:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:25:03,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:25:03,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:25:03,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-28 20:25:03,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-28 20:25:03,640 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:25:03,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:25:03,850 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:25:03,872 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:25:03,872 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 20:25:03,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:25:03 BoogieIcfgContainer [2023-11-28 20:25:03,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:25:03,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:25:03,876 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:25:03,879 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:25:03,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:25:03" (1/3) ... [2023-11-28 20:25:03,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c175b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:25:03, skipping insertion in model container [2023-11-28 20:25:03,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:25:03" (2/3) ... [2023-11-28 20:25:03,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c175b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:25:03, skipping insertion in model container [2023-11-28 20:25:03,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:25:03" (3/3) ... [2023-11-28 20:25:03,882 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2.c [2023-11-28 20:25:03,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:25:03,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-28 20:25:03,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:25:03,953 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;@1db13168, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:25:03,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-28 20:25:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 58 states have internal predecessors, (66), 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) [2023-11-28 20:25:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-28 20:25:03,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:03,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-28 20:25:03,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:03,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 4771204, now seen corresponding path program 1 times [2023-11-28 20:25:03,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:03,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137803664] [2023-11-28 20:25:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:03,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:04,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:04,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137803664] [2023-11-28 20:25:04,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 20:25:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207371349] [2023-11-28 20:25:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:04,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:04,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:04,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:04,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:25:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:04,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 20:25:04,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:25:04,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:04,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207371349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:04,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:04,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:04,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398512148] [2023-11-28 20:25:04,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:04,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 20:25:04,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:04,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 20:25:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:25:04,199 INFO L87 Difference]: Start difference. First operand has 67 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 58 states have internal predecessors, (66), 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:04,231 INFO L93 Difference]: Finished difference Result 133 states and 166 transitions. [2023-11-28 20:25:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 20:25:04,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-28 20:25:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:04,241 INFO L225 Difference]: With dead ends: 133 [2023-11-28 20:25:04,241 INFO L226 Difference]: Without dead ends: 63 [2023-11-28 20:25:04,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 20:25:04,248 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:04,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-28 20:25:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-28 20:25:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 56 states have internal predecessors, (59), 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) [2023-11-28 20:25:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2023-11-28 20:25:04,292 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 4 [2023-11-28 20:25:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:04,292 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2023-11-28 20:25:04,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:25:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2023-11-28 20:25:04,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-28 20:25:04,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:04,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:04,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:04,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:04,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:04,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 308391230, now seen corresponding path program 1 times [2023-11-28 20:25:04,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:04,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420997317] [2023-11-28 20:25:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:04,543 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654781799] [2023-11-28 20:25:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:04,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:04,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:04,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:25:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:04,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:04,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 20:25:04,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:04,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420997317] [2023-11-28 20:25:04,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:04,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654781799] [2023-11-28 20:25:04,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654781799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:04,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:04,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102380967] [2023-11-28 20:25:04,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:04,663 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:25:04,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:04,749 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2023-11-28 20:25:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:04,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-28 20:25:04,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:04,752 INFO L225 Difference]: With dead ends: 148 [2023-11-28 20:25:04,752 INFO L226 Difference]: Without dead ends: 100 [2023-11-28 20:25:04,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:04,754 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:04,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 89 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:04,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-28 20:25:04,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 84. [2023-11-28 20:25:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.7142857142857142) internal successors, (84), 72 states have internal predecessors, (84), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-28 20:25:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2023-11-28 20:25:04,770 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 13 [2023-11-28 20:25:04,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:04,771 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2023-11-28 20:25:04,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:25:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2023-11-28 20:25:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-28 20:25:04,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:04,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:04,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:25:04,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:04,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:04,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash 970193585, now seen corresponding path program 1 times [2023-11-28 20:25:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:04,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984560834] [2023-11-28 20:25:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:04,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:04,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:04,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393593066] [2023-11-28 20:25:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:04,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:04,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:05,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:25:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:05,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:05,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 20:25:05,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:05,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984560834] [2023-11-28 20:25:05,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393593066] [2023-11-28 20:25:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393593066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:05,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:05,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:05,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127383578] [2023-11-28 20:25:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:05,091 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:25:05,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:05,172 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2023-11-28 20:25:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:05,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-28 20:25:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:05,174 INFO L225 Difference]: With dead ends: 100 [2023-11-28 20:25:05,175 INFO L226 Difference]: Without dead ends: 98 [2023-11-28 20:25:05,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:05,177 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 27 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:05,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-28 20:25:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2023-11-28 20:25:05,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 72 states have internal predecessors, (82), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-28 20:25:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2023-11-28 20:25:05,191 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 14 [2023-11-28 20:25:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:05,191 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2023-11-28 20:25:05,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:25:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2023-11-28 20:25:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-28 20:25:05,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:05,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:05,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:05,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:05,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1559935661, now seen corresponding path program 1 times [2023-11-28 20:25:05,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:05,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600823198] [2023-11-28 20:25:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:05,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:05,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:05,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543131519] [2023-11-28 20:25:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:05,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:05,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:05,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:05,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:25:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:05,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:25:05,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:25:05,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600823198] [2023-11-28 20:25:05,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543131519] [2023-11-28 20:25:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543131519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:05,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:05,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014152060] [2023-11-28 20:25:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:05,517 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:05,564 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2023-11-28 20:25:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2023-11-28 20:25:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:05,566 INFO L225 Difference]: With dead ends: 111 [2023-11-28 20:25:05,566 INFO L226 Difference]: Without dead ends: 109 [2023-11-28 20:25:05,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:05,567 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 33 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:05,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-28 20:25:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 94. [2023-11-28 20:25:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.6551724137931034) internal successors, (96), 80 states have internal predecessors, (96), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-28 20:25:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2023-11-28 20:25:05,580 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 21 [2023-11-28 20:25:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:05,581 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2023-11-28 20:25:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2023-11-28 20:25:05,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 20:25:05,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:05,582 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:05,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:25:05,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:05,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:05,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1113366556, now seen corresponding path program 1 times [2023-11-28 20:25:05,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696846707] [2023-11-28 20:25:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:05,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:05,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:05,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429980353] [2023-11-28 20:25:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:05,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:05,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:05,835 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:05,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:25:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:05,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:05,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:25:05,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:05,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:05,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696846707] [2023-11-28 20:25:05,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:05,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429980353] [2023-11-28 20:25:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429980353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139415583] [2023-11-28 20:25:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:05,939 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:06,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:06,006 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2023-11-28 20:25:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:06,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-28 20:25:06,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:06,008 INFO L225 Difference]: With dead ends: 135 [2023-11-28 20:25:06,008 INFO L226 Difference]: Without dead ends: 134 [2023-11-28 20:25:06,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:06,010 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 47 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:06,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 69 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-28 20:25:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 109. [2023-11-28 20:25:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.6619718309859155) internal successors, (118), 93 states have internal predecessors, (118), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 20:25:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 146 transitions. [2023-11-28 20:25:06,025 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 146 transitions. Word has length 22 [2023-11-28 20:25:06,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:06,026 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 146 transitions. [2023-11-28 20:25:06,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:06,026 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 146 transitions. [2023-11-28 20:25:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 20:25:06,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:06,027 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:06,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:25:06,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:06,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:06,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1113365178, now seen corresponding path program 1 times [2023-11-28 20:25:06,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:06,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733544045] [2023-11-28 20:25:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:06,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:06,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:06,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489785487] [2023-11-28 20:25:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:06,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:06,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:25:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:06,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:25:06,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:06,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:25:06,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:06,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:06,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733544045] [2023-11-28 20:25:06,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:06,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489785487] [2023-11-28 20:25:06,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489785487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:06,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:06,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:06,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4815824] [2023-11-28 20:25:06,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:06,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:06,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:06,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:06,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:06,299 INFO L87 Difference]: Start difference. First operand 109 states and 146 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:06,341 INFO L93 Difference]: Finished difference Result 121 states and 153 transitions. [2023-11-28 20:25:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:06,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-28 20:25:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:06,343 INFO L225 Difference]: With dead ends: 121 [2023-11-28 20:25:06,343 INFO L226 Difference]: Without dead ends: 120 [2023-11-28 20:25:06,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:06,345 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 19 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:06,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 101 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-28 20:25:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2023-11-28 20:25:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.647887323943662) internal successors, (117), 93 states have internal predecessors, (117), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 20:25:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2023-11-28 20:25:06,359 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 22 [2023-11-28 20:25:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:06,359 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2023-11-28 20:25:06,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2023-11-28 20:25:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-28 20:25:06,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:06,361 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:06,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 20:25:06,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:06,562 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:06,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash -154624792, now seen corresponding path program 1 times [2023-11-28 20:25:06,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:06,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990221934] [2023-11-28 20:25:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:06,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:06,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:06,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312344307] [2023-11-28 20:25:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:06,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:06,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:06,575 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:06,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:25:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:06,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:06,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:25:06,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:06,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990221934] [2023-11-28 20:25:06,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312344307] [2023-11-28 20:25:06,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312344307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:06,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:06,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860119070] [2023-11-28 20:25:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:06,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:06,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:06,663 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:06,731 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2023-11-28 20:25:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-28 20:25:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:06,733 INFO L225 Difference]: With dead ends: 134 [2023-11-28 20:25:06,733 INFO L226 Difference]: Without dead ends: 133 [2023-11-28 20:25:06,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:06,735 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 45 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:06,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 69 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-28 20:25:06,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 109. [2023-11-28 20:25:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.6056338028169015) internal successors, (114), 93 states have internal predecessors, (114), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 20:25:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2023-11-28 20:25:06,749 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 142 transitions. Word has length 23 [2023-11-28 20:25:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:06,749 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 142 transitions. [2023-11-28 20:25:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 142 transitions. [2023-11-28 20:25:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-28 20:25:06,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:06,751 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:06,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:06,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:06,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:06,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -498401178, now seen corresponding path program 1 times [2023-11-28 20:25:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892343334] [2023-11-28 20:25:06,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:06,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:06,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179481381] [2023-11-28 20:25:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:06,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:06,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:06,971 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:06,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 20:25:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:07,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:07,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:25:07,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:07,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892343334] [2023-11-28 20:25:07,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179481381] [2023-11-28 20:25:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179481381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:07,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:07,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064911402] [2023-11-28 20:25:07,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:07,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:07,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:07,084 INFO L87 Difference]: Start difference. First operand 109 states and 142 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:07,156 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2023-11-28 20:25:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:07,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-28 20:25:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:07,158 INFO L225 Difference]: With dead ends: 129 [2023-11-28 20:25:07,158 INFO L226 Difference]: Without dead ends: 125 [2023-11-28 20:25:07,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:07,160 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:07,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 76 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-28 20:25:07,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2023-11-28 20:25:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 96 states have internal predecessors, (114), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 20:25:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 142 transitions. [2023-11-28 20:25:07,173 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 142 transitions. Word has length 24 [2023-11-28 20:25:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:07,173 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 142 transitions. [2023-11-28 20:25:07,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 142 transitions. [2023-11-28 20:25:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-28 20:25:07,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:07,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:07,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 20:25:07,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:07,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:07,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:07,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1729432746, now seen corresponding path program 1 times [2023-11-28 20:25:07,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:07,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465115481] [2023-11-28 20:25:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:07,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:07,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813075310] [2023-11-28 20:25:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:07,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:07,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:07,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:07,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 20:25:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:07,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:07,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 20:25:07,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:07,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465115481] [2023-11-28 20:25:07,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813075310] [2023-11-28 20:25:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813075310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:07,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:07,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968498661] [2023-11-28 20:25:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:07,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:07,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:07,523 INFO L87 Difference]: Start difference. First operand 112 states and 142 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:07,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:07,700 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2023-11-28 20:25:07,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-28 20:25:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:07,702 INFO L225 Difference]: With dead ends: 118 [2023-11-28 20:25:07,702 INFO L226 Difference]: Without dead ends: 117 [2023-11-28 20:25:07,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:25:07,704 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 23 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:07,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 142 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-28 20:25:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2023-11-28 20:25:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 74 states have (on average 1.527027027027027) internal successors, (113), 96 states have internal predecessors, (113), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 20:25:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2023-11-28 20:25:07,718 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 25 [2023-11-28 20:25:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:07,718 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2023-11-28 20:25:07,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2023-11-28 20:25:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-28 20:25:07,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:07,720 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:07,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 20:25:07,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:07,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:07,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:07,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2010685240, now seen corresponding path program 1 times [2023-11-28 20:25:07,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:07,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109562271] [2023-11-28 20:25:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:07,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:07,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:07,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510395042] [2023-11-28 20:25:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:07,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:07,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:07,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:07,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 20:25:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:07,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:07,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 20:25:08,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109562271] [2023-11-28 20:25:08,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:08,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510395042] [2023-11-28 20:25:08,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510395042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:08,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:08,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:08,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243698265] [2023-11-28 20:25:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:08,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:08,073 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:08,170 INFO L93 Difference]: Finished difference Result 118 states and 145 transitions. [2023-11-28 20:25:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:25:08,170 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), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-28 20:25:08,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:08,172 INFO L225 Difference]: With dead ends: 118 [2023-11-28 20:25:08,172 INFO L226 Difference]: Without dead ends: 109 [2023-11-28 20:25:08,172 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 [2023-11-28 20:25:08,173 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 70 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:08,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 85 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:08,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-28 20:25:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2023-11-28 20:25:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 74 states have (on average 1.4189189189189189) internal successors, (105), 92 states have internal predecessors, (105), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 20:25:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2023-11-28 20:25:08,187 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 36 [2023-11-28 20:25:08,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:08,187 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2023-11-28 20:25:08,187 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), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2023-11-28 20:25:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-28 20:25:08,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:08,189 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:08,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 20:25:08,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 20:25:08,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:08,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2093267047, now seen corresponding path program 1 times [2023-11-28 20:25:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:08,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783260290] [2023-11-28 20:25:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:08,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:08,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:08,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075823435] [2023-11-28 20:25:08,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:08,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:08,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:08,404 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:08,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 20:25:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:08,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:08,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 20:25:08,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:08,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:08,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783260290] [2023-11-28 20:25:08,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:08,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075823435] [2023-11-28 20:25:08,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075823435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:08,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:08,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-28 20:25:08,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998248260] [2023-11-28 20:25:08,730 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:08,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:08,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:08,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:08,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:08,732 INFO L87 Difference]: Start difference. First operand 108 states and 133 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:08,855 INFO L93 Difference]: Finished difference Result 195 states and 240 transitions. [2023-11-28 20:25:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:25:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-11-28 20:25:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:08,858 INFO L225 Difference]: With dead ends: 195 [2023-11-28 20:25:08,858 INFO L226 Difference]: Without dead ends: 191 [2023-11-28 20:25:08,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:08,859 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 86 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:08,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 91 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:08,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-28 20:25:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 164. [2023-11-28 20:25:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 121 states have (on average 1.421487603305785) internal successors, (172), 139 states have internal predecessors, (172), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-28 20:25:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 218 transitions. [2023-11-28 20:25:08,878 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 218 transitions. Word has length 37 [2023-11-28 20:25:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:08,879 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 218 transitions. [2023-11-28 20:25:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:08,879 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 218 transitions. [2023-11-28 20:25:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 20:25:08,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:08,881 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:08,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:09,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 20:25:09,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:09,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash 126305297, now seen corresponding path program 1 times [2023-11-28 20:25:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:09,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168610586] [2023-11-28 20:25:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:09,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:09,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:09,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776012673] [2023-11-28 20:25:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:09,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:09,096 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:09,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 20:25:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:09,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:09,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-28 20:25:09,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:09,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:09,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168610586] [2023-11-28 20:25:09,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:09,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776012673] [2023-11-28 20:25:09,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776012673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362563793] [2023-11-28 20:25:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:09,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:09,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:09,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:09,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:09,251 INFO L87 Difference]: Start difference. First operand 164 states and 218 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:09,344 INFO L93 Difference]: Finished difference Result 169 states and 222 transitions. [2023-11-28 20:25:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:09,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-11-28 20:25:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:09,348 INFO L225 Difference]: With dead ends: 169 [2023-11-28 20:25:09,348 INFO L226 Difference]: Without dead ends: 154 [2023-11-28 20:25:09,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:09,350 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 2 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:09,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 133 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-28 20:25:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-28 20:25:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.4424778761061947) internal successors, (163), 131 states have internal predecessors, (163), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-28 20:25:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 205 transitions. [2023-11-28 20:25:09,367 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 205 transitions. Word has length 42 [2023-11-28 20:25:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:09,367 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 205 transitions. [2023-11-28 20:25:09,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 205 transitions. [2023-11-28 20:25:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-28 20:25:09,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:09,369 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 20:25:09,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 20:25:09,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:09,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash -13759236, now seen corresponding path program 1 times [2023-11-28 20:25:09,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:09,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071811870] [2023-11-28 20:25:09,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:09,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:09,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:09,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94222971] [2023-11-28 20:25:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:09,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:09,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:09,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:09,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 20:25:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:09,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:09,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:25:09,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-28 20:25:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071811870] [2023-11-28 20:25:09,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94222971] [2023-11-28 20:25:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94222971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:09,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:09,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-28 20:25:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191368062] [2023-11-28 20:25:09,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:09,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:09,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:09,736 INFO L87 Difference]: Start difference. First operand 154 states and 205 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-28 20:25:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:09,926 INFO L93 Difference]: Finished difference Result 280 states and 351 transitions. [2023-11-28 20:25:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:25:09,927 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), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 45 [2023-11-28 20:25:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:09,930 INFO L225 Difference]: With dead ends: 280 [2023-11-28 20:25:09,930 INFO L226 Difference]: Without dead ends: 278 [2023-11-28 20:25:09,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:09,931 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 135 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:09,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 192 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-28 20:25:09,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 219. [2023-11-28 20:25:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 166 states have (on average 1.4397590361445782) internal successors, (239), 184 states have internal predecessors, (239), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:25:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 305 transitions. [2023-11-28 20:25:09,955 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 305 transitions. Word has length 45 [2023-11-28 20:25:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:09,955 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 305 transitions. [2023-11-28 20:25:09,955 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), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-28 20:25:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 305 transitions. [2023-11-28 20:25:09,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-28 20:25:09,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:09,957 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:09,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 20:25:10,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 20:25:10,160 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:10,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:10,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1920483020, now seen corresponding path program 1 times [2023-11-28 20:25:10,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:10,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073462720] [2023-11-28 20:25:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:10,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:10,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678976301] [2023-11-28 20:25:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:10,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:10,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:10,172 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:10,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 20:25:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:10,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:10,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-28 20:25:10,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073462720] [2023-11-28 20:25:10,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678976301] [2023-11-28 20:25:10,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678976301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:10,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:10,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544208275] [2023-11-28 20:25:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:10,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:10,326 INFO L87 Difference]: Start difference. First operand 219 states and 305 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:10,387 INFO L93 Difference]: Finished difference Result 242 states and 330 transitions. [2023-11-28 20:25:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:10,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2023-11-28 20:25:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:10,389 INFO L225 Difference]: With dead ends: 242 [2023-11-28 20:25:10,389 INFO L226 Difference]: Without dead ends: 236 [2023-11-28 20:25:10,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:10,390 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:10,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 67 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-28 20:25:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 216. [2023-11-28 20:25:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 163 states have (on average 1.392638036809816) internal successors, (227), 181 states have internal predecessors, (227), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:25:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2023-11-28 20:25:10,408 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 48 [2023-11-28 20:25:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:10,409 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2023-11-28 20:25:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 20:25:10,409 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2023-11-28 20:25:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-28 20:25:10,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:10,410 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-11-28 20:25:10,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 20:25:10,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 20:25:10,612 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:10,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash 996863473, now seen corresponding path program 2 times [2023-11-28 20:25:10,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:10,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483083331] [2023-11-28 20:25:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:10,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134013277] [2023-11-28 20:25:10,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:25:10,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:10,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:10,621 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:10,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 20:25:10,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:25:10,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:10,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:25:10,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-28 20:25:10,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:10,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:10,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483083331] [2023-11-28 20:25:10,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:10,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134013277] [2023-11-28 20:25:10,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134013277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:10,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-28 20:25:10,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869699268] [2023-11-28 20:25:10,872 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:10,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:10,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:10,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:10,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:25:10,873 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 20:25:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:11,021 INFO L93 Difference]: Finished difference Result 330 states and 429 transitions. [2023-11-28 20:25:11,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:11,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2023-11-28 20:25:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:11,024 INFO L225 Difference]: With dead ends: 330 [2023-11-28 20:25:11,025 INFO L226 Difference]: Without dead ends: 326 [2023-11-28 20:25:11,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:25:11,026 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 102 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:11,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 136 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-28 20:25:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 216. [2023-11-28 20:25:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 163 states have (on average 1.3803680981595092) internal successors, (225), 181 states have internal predecessors, (225), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:25:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 291 transitions. [2023-11-28 20:25:11,046 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 291 transitions. Word has length 60 [2023-11-28 20:25:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:11,046 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 291 transitions. [2023-11-28 20:25:11,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 20:25:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 291 transitions. [2023-11-28 20:25:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-28 20:25:11,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:11,047 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:11,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 20:25:11,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 20:25:11,248 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:11,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1195101173, now seen corresponding path program 1 times [2023-11-28 20:25:11,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:11,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639250614] [2023-11-28 20:25:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:11,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610284814] [2023-11-28 20:25:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:11,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:11,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:11,265 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:11,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 20:25:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:11,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:25:11,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-28 20:25:11,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:11,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639250614] [2023-11-28 20:25:11,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610284814] [2023-11-28 20:25:11,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610284814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:11,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:11,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:25:11,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664165030] [2023-11-28 20:25:11,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:11,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:25:11,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:25:11,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:11,330 INFO L87 Difference]: Start difference. First operand 216 states and 291 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:11,372 INFO L93 Difference]: Finished difference Result 216 states and 291 transitions. [2023-11-28 20:25:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2023-11-28 20:25:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:11,377 INFO L225 Difference]: With dead ends: 216 [2023-11-28 20:25:11,377 INFO L226 Difference]: Without dead ends: 215 [2023-11-28 20:25:11,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:25:11,378 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 4 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:11,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 93 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-28 20:25:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-11-28 20:25:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 163 states have (on average 1.361963190184049) internal successors, (222), 180 states have internal predecessors, (222), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:25:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2023-11-28 20:25:11,397 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 67 [2023-11-28 20:25:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:11,397 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2023-11-28 20:25:11,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2023-11-28 20:25:11,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-28 20:25:11,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:11,399 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:11,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 20:25:11,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 20:25:11,599 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:11,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1606569407, now seen corresponding path program 1 times [2023-11-28 20:25:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937238919] [2023-11-28 20:25:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:11,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:11,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:11,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127798468] [2023-11-28 20:25:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:11,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:11,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:11,611 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:11,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 20:25:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:11,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:25:11,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-28 20:25:11,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:11,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937238919] [2023-11-28 20:25:11,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:11,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127798468] [2023-11-28 20:25:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127798468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:11,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:11,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:11,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673429545] [2023-11-28 20:25:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:11,800 INFO L87 Difference]: Start difference. First operand 215 states and 288 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:25:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:11,886 INFO L93 Difference]: Finished difference Result 331 states and 445 transitions. [2023-11-28 20:25:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:25:11,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2023-11-28 20:25:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:11,889 INFO L225 Difference]: With dead ends: 331 [2023-11-28 20:25:11,889 INFO L226 Difference]: Without dead ends: 329 [2023-11-28 20:25:11,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:11,890 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 41 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:11,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 98 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-28 20:25:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 305. [2023-11-28 20:25:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 241 states have (on average 1.3734439834024896) internal successors, (331), 258 states have internal predecessors, (331), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:25:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 421 transitions. [2023-11-28 20:25:11,907 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 421 transitions. Word has length 68 [2023-11-28 20:25:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:11,908 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 421 transitions. [2023-11-28 20:25:11,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:25:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 421 transitions. [2023-11-28 20:25:11,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-28 20:25:11,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:11,909 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:11,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 20:25:12,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 20:25:12,113 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:12,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1735955827, now seen corresponding path program 1 times [2023-11-28 20:25:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:12,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107334843] [2023-11-28 20:25:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:12,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41213715] [2023-11-28 20:25:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:12,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:12,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:12,122 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:12,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 20:25:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:12,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:12,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-28 20:25:12,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:12,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107334843] [2023-11-28 20:25:12,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:12,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41213715] [2023-11-28 20:25:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41213715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:12,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:12,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:12,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065050013] [2023-11-28 20:25:12,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:12,384 INFO L87 Difference]: Start difference. First operand 305 states and 421 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:12,512 INFO L93 Difference]: Finished difference Result 326 states and 442 transitions. [2023-11-28 20:25:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:25:12,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-11-28 20:25:12,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:12,515 INFO L225 Difference]: With dead ends: 326 [2023-11-28 20:25:12,515 INFO L226 Difference]: Without dead ends: 325 [2023-11-28 20:25:12,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:12,516 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 51 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:12,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 107 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-28 20:25:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 314. [2023-11-28 20:25:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 250 states have (on average 1.36) internal successors, (340), 267 states have internal predecessors, (340), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:25:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 430 transitions. [2023-11-28 20:25:12,548 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 430 transitions. Word has length 69 [2023-11-28 20:25:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:12,549 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 430 transitions. [2023-11-28 20:25:12,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 430 transitions. [2023-11-28 20:25:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-28 20:25:12,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:12,550 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:12,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 20:25:12,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 20:25:12,751 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:12,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2019944321, now seen corresponding path program 1 times [2023-11-28 20:25:12,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384520568] [2023-11-28 20:25:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:12,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148477083] [2023-11-28 20:25:12,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:12,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:12,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:12,761 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:12,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 20:25:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:12,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:12,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-28 20:25:12,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:12,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384520568] [2023-11-28 20:25:12,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148477083] [2023-11-28 20:25:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148477083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:12,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:12,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353488124] [2023-11-28 20:25:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:12,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:12,937 INFO L87 Difference]: Start difference. First operand 314 states and 430 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:13,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:13,008 INFO L93 Difference]: Finished difference Result 323 states and 436 transitions. [2023-11-28 20:25:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:13,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 70 [2023-11-28 20:25:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:13,012 INFO L225 Difference]: With dead ends: 323 [2023-11-28 20:25:13,012 INFO L226 Difference]: Without dead ends: 321 [2023-11-28 20:25:13,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:13,013 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 35 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:13,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 72 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-28 20:25:13,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 317. [2023-11-28 20:25:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 253 states have (on average 1.3280632411067195) internal successors, (336), 270 states have internal predecessors, (336), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:25:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 426 transitions. [2023-11-28 20:25:13,040 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 426 transitions. Word has length 70 [2023-11-28 20:25:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:13,041 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 426 transitions. [2023-11-28 20:25:13,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 426 transitions. [2023-11-28 20:25:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-28 20:25:13,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:13,042 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:13,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 20:25:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:13,243 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:13,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash -158723005, now seen corresponding path program 1 times [2023-11-28 20:25:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:13,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159078976] [2023-11-28 20:25:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:13,251 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:13,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2091993526] [2023-11-28 20:25:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:13,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:13,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:13,253 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:13,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 20:25:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:13,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 20:25:13,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-28 20:25:13,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159078976] [2023-11-28 20:25:14,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091993526] [2023-11-28 20:25:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091993526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:14,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-28 20:25:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428692837] [2023-11-28 20:25:14,959 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:14,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:25:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:14,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:25:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:25:14,960 INFO L87 Difference]: Start difference. First operand 317 states and 426 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:25:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:15,265 INFO L93 Difference]: Finished difference Result 429 states and 551 transitions. [2023-11-28 20:25:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:25:15,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2023-11-28 20:25:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:15,268 INFO L225 Difference]: With dead ends: 429 [2023-11-28 20:25:15,268 INFO L226 Difference]: Without dead ends: 359 [2023-11-28 20:25:15,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:25:15,269 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:15,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 170 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:25:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-28 20:25:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 346. [2023-11-28 20:25:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 278 states have (on average 1.3093525179856116) internal successors, (364), 295 states have internal predecessors, (364), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-28 20:25:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 462 transitions. [2023-11-28 20:25:15,295 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 462 transitions. Word has length 72 [2023-11-28 20:25:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:15,296 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 462 transitions. [2023-11-28 20:25:15,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:25:15,296 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 462 transitions. [2023-11-28 20:25:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-28 20:25:15,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:15,297 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:15,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:15,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:15,497 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:15,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash -625445783, now seen corresponding path program 1 times [2023-11-28 20:25:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:15,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482211777] [2023-11-28 20:25:15,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:15,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:15,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359644489] [2023-11-28 20:25:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:15,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:15,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:15,509 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:15,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 20:25:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:15,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 20:25:15,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-28 20:25:15,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:16,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482211777] [2023-11-28 20:25:16,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359644489] [2023-11-28 20:25:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359644489] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:16,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:16,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-28 20:25:16,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856990517] [2023-11-28 20:25:16,290 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:16,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:16,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:25:16,292 INFO L87 Difference]: Start difference. First operand 346 states and 462 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:25:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:16,461 INFO L93 Difference]: Finished difference Result 361 states and 469 transitions. [2023-11-28 20:25:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:16,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2023-11-28 20:25:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:16,464 INFO L225 Difference]: With dead ends: 361 [2023-11-28 20:25:16,465 INFO L226 Difference]: Without dead ends: 360 [2023-11-28 20:25:16,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:25:16,466 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 54 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:16,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 107 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:16,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-28 20:25:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 346. [2023-11-28 20:25:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 278 states have (on average 1.3057553956834533) internal successors, (363), 295 states have internal predecessors, (363), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-28 20:25:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 461 transitions. [2023-11-28 20:25:16,504 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 461 transitions. Word has length 73 [2023-11-28 20:25:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:16,504 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 461 transitions. [2023-11-28 20:25:16,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:25:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 461 transitions. [2023-11-28 20:25:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-28 20:25:16,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:16,506 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:16,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:16,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:16,706 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:16,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2086017285, now seen corresponding path program 1 times [2023-11-28 20:25:16,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:16,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525752988] [2023-11-28 20:25:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:16,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:16,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138911934] [2023-11-28 20:25:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:16,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:16,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:16,718 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:16,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 20:25:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:16,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:16,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-28 20:25:16,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525752988] [2023-11-28 20:25:16,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138911934] [2023-11-28 20:25:16,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138911934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:16,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:16,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869655251] [2023-11-28 20:25:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:16,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:16,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:16,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:16,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:16,810 INFO L87 Difference]: Start difference. First operand 346 states and 461 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:17,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:17,071 INFO L93 Difference]: Finished difference Result 357 states and 470 transitions. [2023-11-28 20:25:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:25:17,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 74 [2023-11-28 20:25:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:17,077 INFO L225 Difference]: With dead ends: 357 [2023-11-28 20:25:17,077 INFO L226 Difference]: Without dead ends: 355 [2023-11-28 20:25:17,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:25:17,078 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 64 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:17,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 135 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:17,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-28 20:25:17,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2023-11-28 20:25:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 284 states have (on average 1.2746478873239437) internal successors, (362), 300 states have internal predecessors, (362), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-28 20:25:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 460 transitions. [2023-11-28 20:25:17,113 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 460 transitions. Word has length 74 [2023-11-28 20:25:17,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:17,114 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 460 transitions. [2023-11-28 20:25:17,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:17,114 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 460 transitions. [2023-11-28 20:25:17,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-28 20:25:17,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:17,115 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:17,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-28 20:25:17,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:17,322 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:17,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash 242026475, now seen corresponding path program 1 times [2023-11-28 20:25:17,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:17,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622594070] [2023-11-28 20:25:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:17,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:17,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251266337] [2023-11-28 20:25:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:17,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:17,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:17,338 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:17,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 20:25:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:17,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 20:25:17,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-28 20:25:17,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622594070] [2023-11-28 20:25:18,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:18,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251266337] [2023-11-28 20:25:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251266337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:18,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:18,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-28 20:25:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167485653] [2023-11-28 20:25:18,008 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:25:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:25:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:25:18,009 INFO L87 Difference]: Start difference. First operand 351 states and 460 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 20:25:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:18,224 INFO L93 Difference]: Finished difference Result 360 states and 467 transitions. [2023-11-28 20:25:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:25:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2023-11-28 20:25:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:18,227 INFO L225 Difference]: With dead ends: 360 [2023-11-28 20:25:18,227 INFO L226 Difference]: Without dead ends: 356 [2023-11-28 20:25:18,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:25:18,228 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 57 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:18,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 170 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-28 20:25:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2023-11-28 20:25:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 287 states have (on average 1.2717770034843205) internal successors, (365), 303 states have internal predecessors, (365), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-28 20:25:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 463 transitions. [2023-11-28 20:25:18,250 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 463 transitions. Word has length 75 [2023-11-28 20:25:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:18,250 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 463 transitions. [2023-11-28 20:25:18,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-28 20:25:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 463 transitions. [2023-11-28 20:25:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-28 20:25:18,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:18,251 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-11-28 20:25:18,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:18,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:18,452 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:18,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1922032345, now seen corresponding path program 3 times [2023-11-28 20:25:18,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:18,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065701323] [2023-11-28 20:25:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:18,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:18,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122917974] [2023-11-28 20:25:18,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:25:18,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:18,462 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:18,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 20:25:18,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 20:25:18,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:18,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:18,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-28 20:25:18,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:18,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065701323] [2023-11-28 20:25:18,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122917974] [2023-11-28 20:25:18,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122917974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:18,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:18,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:25:18,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546945071] [2023-11-28 20:25:18,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:18,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:25:18,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:18,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:25:18,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:18,562 INFO L87 Difference]: Start difference. First operand 354 states and 463 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:18,618 INFO L93 Difference]: Finished difference Result 354 states and 463 transitions. [2023-11-28 20:25:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:25:18,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 83 [2023-11-28 20:25:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:18,621 INFO L225 Difference]: With dead ends: 354 [2023-11-28 20:25:18,621 INFO L226 Difference]: Without dead ends: 351 [2023-11-28 20:25:18,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:25:18,622 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 78 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:18,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 44 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:25:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-28 20:25:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 270. [2023-11-28 20:25:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 216 states have (on average 1.2175925925925926) internal successors, (263), 229 states have internal predecessors, (263), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-28 20:25:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 341 transitions. [2023-11-28 20:25:18,642 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 341 transitions. Word has length 83 [2023-11-28 20:25:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:18,643 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 341 transitions. [2023-11-28 20:25:18,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 20:25:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 341 transitions. [2023-11-28 20:25:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-28 20:25:18,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:18,644 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:18,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-28 20:25:18,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:18,845 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:18,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:18,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1701788298, now seen corresponding path program 1 times [2023-11-28 20:25:18,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:18,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018247076] [2023-11-28 20:25:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:18,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:18,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:18,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211959341] [2023-11-28 20:25:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:18,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:18,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:18,853 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:18,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 20:25:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:18,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 20:25:18,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-28 20:25:19,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018247076] [2023-11-28 20:25:21,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211959341] [2023-11-28 20:25:21,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211959341] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:21,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:21,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-28 20:25:21,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429347716] [2023-11-28 20:25:21,440 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:21,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:25:21,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:21,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:25:21,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:25:21,441 INFO L87 Difference]: Start difference. First operand 270 states and 341 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:25:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:21,833 INFO L93 Difference]: Finished difference Result 272 states and 341 transitions. [2023-11-28 20:25:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:25:21,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2023-11-28 20:25:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:21,836 INFO L225 Difference]: With dead ends: 272 [2023-11-28 20:25:21,837 INFO L226 Difference]: Without dead ends: 271 [2023-11-28 20:25:21,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:25:21,838 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:21,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 141 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:25:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-28 20:25:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2023-11-28 20:25:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 216 states have (on average 1.212962962962963) internal successors, (262), 229 states have internal predecessors, (262), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-28 20:25:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 340 transitions. [2023-11-28 20:25:21,869 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 340 transitions. Word has length 89 [2023-11-28 20:25:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:21,869 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 340 transitions. [2023-11-28 20:25:21,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-28 20:25:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 340 transitions. [2023-11-28 20:25:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-28 20:25:21,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:21,871 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:21,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-28 20:25:22,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-28 20:25:22,072 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:22,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash -963981556, now seen corresponding path program 1 times [2023-11-28 20:25:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939885317] [2023-11-28 20:25:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:22,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:22,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014556226] [2023-11-28 20:25:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:22,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:22,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:22,085 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:22,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-28 20:25:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:22,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:25:22,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-11-28 20:25:22,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:25:22,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939885317] [2023-11-28 20:25:22,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:22,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014556226] [2023-11-28 20:25:22,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014556226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:25:22,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:25:22,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:25:22,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725375170] [2023-11-28 20:25:22,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:25:22,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:22,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:22,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:22,186 INFO L87 Difference]: Start difference. First operand 270 states and 340 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:25:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:22,437 INFO L93 Difference]: Finished difference Result 273 states and 340 transitions. [2023-11-28 20:25:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:25:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2023-11-28 20:25:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:22,441 INFO L225 Difference]: With dead ends: 273 [2023-11-28 20:25:22,441 INFO L226 Difference]: Without dead ends: 240 [2023-11-28 20:25:22,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:25:22,442 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 24 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:22,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 172 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-28 20:25:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 237. [2023-11-28 20:25:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 188 states have (on average 1.2340425531914894) internal successors, (232), 200 states have internal predecessors, (232), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-28 20:25:22,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 302 transitions. [2023-11-28 20:25:22,466 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 302 transitions. Word has length 91 [2023-11-28 20:25:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:22,467 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 302 transitions. [2023-11-28 20:25:22,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:25:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 302 transitions. [2023-11-28 20:25:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-28 20:25:22,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:22,468 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1] [2023-11-28 20:25:22,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-28 20:25:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:22,669 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:22,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1680030238, now seen corresponding path program 1 times [2023-11-28 20:25:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:22,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971236009] [2023-11-28 20:25:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:22,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:22,676 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919479813] [2023-11-28 20:25:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:22,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:22,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:22,677 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:22,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-28 20:25:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:22,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:22,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-28 20:25:22,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-28 20:25:22,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:22,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971236009] [2023-11-28 20:25:22,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:22,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919479813] [2023-11-28 20:25:22,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919479813] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:22,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:22,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-28 20:25:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473443140] [2023-11-28 20:25:22,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:22,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:25:22,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:25:22,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:25:22,884 INFO L87 Difference]: Start difference. First operand 237 states and 302 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-11-28 20:25:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:23,128 INFO L93 Difference]: Finished difference Result 636 states and 787 transitions. [2023-11-28 20:25:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:25:23,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 93 [2023-11-28 20:25:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:23,133 INFO L225 Difference]: With dead ends: 636 [2023-11-28 20:25:23,133 INFO L226 Difference]: Without dead ends: 635 [2023-11-28 20:25:23,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:25:23,134 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 304 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:23,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 280 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2023-11-28 20:25:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 283. [2023-11-28 20:25:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 222 states have (on average 1.2342342342342343) internal successors, (274), 234 states have internal predecessors, (274), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-28 20:25:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 368 transitions. [2023-11-28 20:25:23,163 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 368 transitions. Word has length 93 [2023-11-28 20:25:23,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:23,163 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 368 transitions. [2023-11-28 20:25:23,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-11-28 20:25:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 368 transitions. [2023-11-28 20:25:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-28 20:25:23,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:23,165 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:23,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-28 20:25:23,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-28 20:25:23,366 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:23,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:23,366 INFO L85 PathProgramCache]: Analyzing trace with hash -958127495, now seen corresponding path program 2 times [2023-11-28 20:25:23,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:23,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245285414] [2023-11-28 20:25:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:23,374 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:23,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747984364] [2023-11-28 20:25:23,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:25:23,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:23,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:23,377 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:23,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-28 20:25:23,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:25:23,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:23,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:25:23,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-28 20:25:23,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:24,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245285414] [2023-11-28 20:25:24,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747984364] [2023-11-28 20:25:24,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747984364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:24,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:24,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-28 20:25:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394444273] [2023-11-28 20:25:24,306 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:25:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:25:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:25:24,308 INFO L87 Difference]: Start difference. First operand 283 states and 368 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:24,505 INFO L93 Difference]: Finished difference Result 343 states and 439 transitions. [2023-11-28 20:25:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:25:24,505 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 95 [2023-11-28 20:25:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:24,508 INFO L225 Difference]: With dead ends: 343 [2023-11-28 20:25:24,508 INFO L226 Difference]: Without dead ends: 342 [2023-11-28 20:25:24,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:25:24,509 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 86 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 79 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-28 20:25:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 283. [2023-11-28 20:25:24,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 222 states have (on average 1.2252252252252251) internal successors, (272), 234 states have internal predecessors, (272), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-28 20:25:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 366 transitions. [2023-11-28 20:25:24,533 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 366 transitions. Word has length 95 [2023-11-28 20:25:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:24,534 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 366 transitions. [2023-11-28 20:25:24,534 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 366 transitions. [2023-11-28 20:25:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-28 20:25:24,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:24,535 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:24,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-28 20:25:24,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:24,736 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:24,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:24,736 INFO L85 PathProgramCache]: Analyzing trace with hash 362818803, now seen corresponding path program 2 times [2023-11-28 20:25:24,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:24,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960628464] [2023-11-28 20:25:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:24,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:24,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376481945] [2023-11-28 20:25:24,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:25:24,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:24,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:24,746 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:24,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-28 20:25:24,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:25:24,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:24,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:25:24,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-28 20:25:24,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:25,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960628464] [2023-11-28 20:25:25,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376481945] [2023-11-28 20:25:25,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376481945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:25,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:25,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-28 20:25:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412462930] [2023-11-28 20:25:25,235 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:25,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:25,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:25:25,237 INFO L87 Difference]: Start difference. First operand 283 states and 366 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:25,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:25,346 INFO L93 Difference]: Finished difference Result 286 states and 366 transitions. [2023-11-28 20:25:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:25,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 96 [2023-11-28 20:25:25,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:25,349 INFO L225 Difference]: With dead ends: 286 [2023-11-28 20:25:25,349 INFO L226 Difference]: Without dead ends: 285 [2023-11-28 20:25:25,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:25:25,350 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 65 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:25,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 53 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-28 20:25:25,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2023-11-28 20:25:25,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 222 states have (on average 1.2072072072072073) internal successors, (268), 233 states have internal predecessors, (268), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-28 20:25:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 362 transitions. [2023-11-28 20:25:25,391 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 362 transitions. Word has length 96 [2023-11-28 20:25:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:25,391 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 362 transitions. [2023-11-28 20:25:25,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:25:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 362 transitions. [2023-11-28 20:25:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-28 20:25:25,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:25,393 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:25,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:25,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-28 20:25:25,593 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:25,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:25,594 INFO L85 PathProgramCache]: Analyzing trace with hash 776521205, now seen corresponding path program 2 times [2023-11-28 20:25:25,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:25,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388568989] [2023-11-28 20:25:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:25,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:25,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:25,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757170166] [2023-11-28 20:25:25,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:25:25,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:25,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:25,602 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:25,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-28 20:25:25,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:25:25,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:25,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 20:25:25,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-28 20:25:26,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388568989] [2023-11-28 20:25:27,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757170166] [2023-11-28 20:25:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757170166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:25:27,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:25:27,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-28 20:25:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395627254] [2023-11-28 20:25:27,579 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:27,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:25:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:25:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:25:27,581 INFO L87 Difference]: Start difference. First operand 282 states and 362 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-28 20:25:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:28,072 INFO L93 Difference]: Finished difference Result 351 states and 443 transitions. [2023-11-28 20:25:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:25:28,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 98 [2023-11-28 20:25:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:28,075 INFO L225 Difference]: With dead ends: 351 [2023-11-28 20:25:28,076 INFO L226 Difference]: Without dead ends: 350 [2023-11-28 20:25:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-28 20:25:28,077 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 33 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 276 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:25:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-28 20:25:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 327. [2023-11-28 20:25:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.1954022988505748) internal successors, (312), 272 states have internal predecessors, (312), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-28 20:25:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 418 transitions. [2023-11-28 20:25:28,128 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 418 transitions. Word has length 98 [2023-11-28 20:25:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:28,129 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 418 transitions. [2023-11-28 20:25:28,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 12 states have internal predecessors, (46), 4 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-28 20:25:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 418 transitions. [2023-11-28 20:25:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-28 20:25:28,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:28,132 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:28,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-28 20:25:28,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:28,341 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:28,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2055692524, now seen corresponding path program 2 times [2023-11-28 20:25:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:28,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885182129] [2023-11-28 20:25:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:28,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:28,351 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:28,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770565817] [2023-11-28 20:25:28,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:25:28,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:28,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:28,353 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:28,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-28 20:25:28,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:25:28,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:28,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:25:28,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:28,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885182129] [2023-11-28 20:25:28,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770565817] [2023-11-28 20:25:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770565817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:28,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-28 20:25:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490224271] [2023-11-28 20:25:28,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:28,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:25:28,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:25:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:28,633 INFO L87 Difference]: Start difference. First operand 327 states and 418 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 20:25:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:28,738 INFO L93 Difference]: Finished difference Result 336 states and 424 transitions. [2023-11-28 20:25:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:25:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2023-11-28 20:25:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:28,741 INFO L225 Difference]: With dead ends: 336 [2023-11-28 20:25:28,741 INFO L226 Difference]: Without dead ends: 329 [2023-11-28 20:25:28,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:25:28,742 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 48 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:28,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 143 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:25:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-28 20:25:28,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2023-11-28 20:25:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 261 states have (on average 1.1839080459770115) internal successors, (309), 272 states have internal predecessors, (309), 53 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-28 20:25:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 415 transitions. [2023-11-28 20:25:28,770 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 415 transitions. Word has length 112 [2023-11-28 20:25:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:28,770 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 415 transitions. [2023-11-28 20:25:28,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-28 20:25:28,771 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 415 transitions. [2023-11-28 20:25:28,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 20:25:28,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:28,772 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1] [2023-11-28 20:25:28,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-28 20:25:28,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-28 20:25:28,974 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:28,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1724586950, now seen corresponding path program 2 times [2023-11-28 20:25:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894904030] [2023-11-28 20:25:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:28,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:28,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:28,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775656197] [2023-11-28 20:25:28,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:25:28,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:28,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:28,982 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:28,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-28 20:25:29,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:25:29,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:29,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:25:29,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-28 20:25:29,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-28 20:25:29,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894904030] [2023-11-28 20:25:29,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:29,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775656197] [2023-11-28 20:25:29,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775656197] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:29,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:29,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-28 20:25:29,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657037297] [2023-11-28 20:25:29,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:29,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:25:29,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:25:29,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:25:29,214 INFO L87 Difference]: Start difference. First operand 327 states and 415 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 12 states have internal predecessors, (81), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-11-28 20:25:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:29,827 INFO L93 Difference]: Finished difference Result 939 states and 1168 transitions. [2023-11-28 20:25:29,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:25:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 12 states have internal predecessors, (81), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 114 [2023-11-28 20:25:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:29,832 INFO L225 Difference]: With dead ends: 939 [2023-11-28 20:25:29,832 INFO L226 Difference]: Without dead ends: 937 [2023-11-28 20:25:29,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:25:29,834 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 506 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 305 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:25:29,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-11-28 20:25:29,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 347. [2023-11-28 20:25:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 275 states have (on average 1.170909090909091) internal successors, (322), 286 states have internal predecessors, (322), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-28 20:25:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 440 transitions. [2023-11-28 20:25:29,888 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 440 transitions. Word has length 114 [2023-11-28 20:25:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:29,888 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 440 transitions. [2023-11-28 20:25:29,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 12 states have internal predecessors, (81), 10 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-11-28 20:25:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 440 transitions. [2023-11-28 20:25:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 20:25:29,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:29,890 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:29,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-28 20:25:30,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-28 20:25:30,091 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:30,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:30,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1048765638, now seen corresponding path program 1 times [2023-11-28 20:25:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:30,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252914256] [2023-11-28 20:25:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:30,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840816149] [2023-11-28 20:25:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:30,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:30,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:30,099 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:30,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-28 20:25:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:30,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 20:25:30,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:30,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:30,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:30,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252914256] [2023-11-28 20:25:30,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:30,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840816149] [2023-11-28 20:25:30,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840816149] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:30,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:30,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-28 20:25:30,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154569676] [2023-11-28 20:25:30,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:30,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:25:30,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:25:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:25:30,641 INFO L87 Difference]: Start difference. First operand 347 states and 440 transitions. Second operand has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 20:25:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:30,985 INFO L93 Difference]: Finished difference Result 436 states and 551 transitions. [2023-11-28 20:25:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:25:30,986 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 114 [2023-11-28 20:25:30,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:30,988 INFO L225 Difference]: With dead ends: 436 [2023-11-28 20:25:30,988 INFO L226 Difference]: Without dead ends: 434 [2023-11-28 20:25:30,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:25:30,989 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 141 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:30,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 240 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-28 20:25:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 375. [2023-11-28 20:25:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 299 states have (on average 1.1872909698996656) internal successors, (355), 310 states have internal predecessors, (355), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-28 20:25:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 481 transitions. [2023-11-28 20:25:31,024 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 481 transitions. Word has length 114 [2023-11-28 20:25:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:31,024 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 481 transitions. [2023-11-28 20:25:31,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.181818181818182) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 20:25:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 481 transitions. [2023-11-28 20:25:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-28 20:25:31,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:31,025 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 20:25:31,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-28 20:25:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-28 20:25:31,226 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:31,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash 740464748, now seen corresponding path program 1 times [2023-11-28 20:25:31,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:31,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740301614] [2023-11-28 20:25:31,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:31,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:31,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385635560] [2023-11-28 20:25:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:31,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:31,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:31,234 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:31,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-28 20:25:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:31,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-28 20:25:31,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 25 proven. 18 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:31,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:34,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740301614] [2023-11-28 20:25:34,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385635560] [2023-11-28 20:25:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385635560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:34,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2023-11-28 20:25:34,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463924217] [2023-11-28 20:25:34,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:34,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:25:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:34,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:25:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:25:34,460 INFO L87 Difference]: Start difference. First operand 375 states and 481 transitions. Second operand has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 20:25:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:34,696 INFO L93 Difference]: Finished difference Result 494 states and 629 transitions. [2023-11-28 20:25:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:25:34,697 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 119 [2023-11-28 20:25:34,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:34,699 INFO L225 Difference]: With dead ends: 494 [2023-11-28 20:25:34,699 INFO L226 Difference]: Without dead ends: 493 [2023-11-28 20:25:34,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:25:34,700 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 279 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:34,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 269 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:25:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-11-28 20:25:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 374. [2023-11-28 20:25:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 299 states have (on average 1.1806020066889633) internal successors, (353), 309 states have internal predecessors, (353), 63 states have call successors, (63), 1 states have call predecessors, (63), 1 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-28 20:25:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 479 transitions. [2023-11-28 20:25:34,753 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 479 transitions. Word has length 119 [2023-11-28 20:25:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:34,754 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 479 transitions. [2023-11-28 20:25:34,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.538461538461538) internal successors, (111), 14 states have internal predecessors, (111), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 20:25:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 479 transitions. [2023-11-28 20:25:34,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-28 20:25:34,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:34,756 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-28 20:25:34,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-28 20:25:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-28 20:25:34,956 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:34,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1479570818, now seen corresponding path program 1 times [2023-11-28 20:25:34,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:34,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686862774] [2023-11-28 20:25:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:34,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:34,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287128855] [2023-11-28 20:25:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:34,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:34,970 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:34,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-28 20:25:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:25:35,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:25:35,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:35,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:25:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:25:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:25:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686862774] [2023-11-28 20:25:37,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:25:37,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287128855] [2023-11-28 20:25:37,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287128855] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:25:37,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:25:37,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-28 20:25:37,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999909646] [2023-11-28 20:25:37,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:25:37,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:25:37,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:25:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:25:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:25:37,127 INFO L87 Difference]: Start difference. First operand 374 states and 479 transitions. Second operand has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 14 states have internal predecessors, (113), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 20:25:38,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:25:38,266 INFO L93 Difference]: Finished difference Result 762 states and 927 transitions. [2023-11-28 20:25:38,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 20:25:38,267 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 14 states have internal predecessors, (113), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 120 [2023-11-28 20:25:38,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:25:38,270 INFO L225 Difference]: With dead ends: 762 [2023-11-28 20:25:38,270 INFO L226 Difference]: Without dead ends: 670 [2023-11-28 20:25:38,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=252, Unknown=0, NotChecked=0, Total=420 [2023-11-28 20:25:38,271 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 422 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:25:38,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 462 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 20:25:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-11-28 20:25:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 518. [2023-11-28 20:25:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 427 states have (on average 1.189695550351288) internal successors, (508), 437 states have internal predecessors, (508), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-28 20:25:38,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 666 transitions. [2023-11-28 20:25:38,342 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 666 transitions. Word has length 120 [2023-11-28 20:25:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:25:38,343 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 666 transitions. [2023-11-28 20:25:38,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.692307692307692) internal successors, (113), 14 states have internal predecessors, (113), 8 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-28 20:25:38,343 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 666 transitions. [2023-11-28 20:25:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:25:38,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:25:38,345 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:25:38,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-28 20:25:38,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-28 20:25:38,545 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:25:38,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:25:38,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1747377323, now seen corresponding path program 3 times [2023-11-28 20:25:38,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:25:38,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910089683] [2023-11-28 20:25:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:25:38,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:25:38,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:25:38,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393163835] [2023-11-28 20:25:38,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:25:38,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:25:38,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:25:38,555 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:25:38,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-28 20:25:38,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 20:25:38,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:25:38,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 20:25:38,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:25:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 64 proven. 5 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-11-28 20:25:39,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:00,409 WARN L293 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:26:00,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910089683] [2023-11-28 20:26:00,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393163835] [2023-11-28 20:26:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393163835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:00,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:00,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-28 20:26:00,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085964829] [2023-11-28 20:26:00,412 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:26:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:26:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=235, Unknown=2, NotChecked=0, Total=306 [2023-11-28 20:26:00,413 INFO L87 Difference]: Start difference. First operand 518 states and 666 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:26:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:00,822 INFO L93 Difference]: Finished difference Result 586 states and 745 transitions. [2023-11-28 20:26:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:26:00,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 121 [2023-11-28 20:26:00,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:00,827 INFO L225 Difference]: With dead ends: 586 [2023-11-28 20:26:00,827 INFO L226 Difference]: Without dead ends: 585 [2023-11-28 20:26:00,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=84, Invalid=294, Unknown=2, NotChecked=0, Total=380 [2023-11-28 20:26:00,828 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:00,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 140 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:26:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-28 20:26:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 550. [2023-11-28 20:26:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 455 states have (on average 1.1868131868131868) internal successors, (540), 465 states have internal predecessors, (540), 83 states have call successors, (83), 1 states have call predecessors, (83), 1 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-28 20:26:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 706 transitions. [2023-11-28 20:26:00,918 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 706 transitions. Word has length 121 [2023-11-28 20:26:00,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:00,918 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 706 transitions. [2023-11-28 20:26:00,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:26:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 706 transitions. [2023-11-28 20:26:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-28 20:26:00,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:00,920 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:00,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-28 20:26:01,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-28 20:26:01,121 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:01,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1636968976, now seen corresponding path program 1 times [2023-11-28 20:26:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:01,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680725446] [2023-11-28 20:26:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:01,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:01,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:01,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456196056] [2023-11-28 20:26:01,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:01,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:01,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:01,132 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:01,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-28 20:26:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:01,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 20:26:01,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-28 20:26:01,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:01,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680725446] [2023-11-28 20:26:01,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456196056] [2023-11-28 20:26:01,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456196056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:01,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:26:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407706684] [2023-11-28 20:26:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:01,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:26:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:26:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:26:01,475 INFO L87 Difference]: Start difference. First operand 550 states and 706 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-28 20:26:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:01,762 INFO L93 Difference]: Finished difference Result 748 states and 961 transitions. [2023-11-28 20:26:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:26:01,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 121 [2023-11-28 20:26:01,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:01,765 INFO L225 Difference]: With dead ends: 748 [2023-11-28 20:26:01,765 INFO L226 Difference]: Without dead ends: 533 [2023-11-28 20:26:01,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:26:01,766 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 78 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:01,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 170 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:26:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-28 20:26:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 516. [2023-11-28 20:26:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 425 states have (on average 1.188235294117647) internal successors, (505), 435 states have internal predecessors, (505), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-28 20:26:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 663 transitions. [2023-11-28 20:26:01,829 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 663 transitions. Word has length 121 [2023-11-28 20:26:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:01,829 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 663 transitions. [2023-11-28 20:26:01,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-28 20:26:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 663 transitions. [2023-11-28 20:26:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-28 20:26:01,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:01,831 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 20:26:01,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-28 20:26:02,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-28 20:26:02,034 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:02,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash 233383428, now seen corresponding path program 3 times [2023-11-28 20:26:02,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:02,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727266875] [2023-11-28 20:26:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:02,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:02,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:02,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449500497] [2023-11-28 20:26:02,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:26:02,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:02,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:02,042 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:02,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-28 20:26:02,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-28 20:26:02,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:02,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:26:02,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-11-28 20:26:02,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:26:02,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727266875] [2023-11-28 20:26:02,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:02,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449500497] [2023-11-28 20:26:02,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449500497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:26:02,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:26:02,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:26:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434051286] [2023-11-28 20:26:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:26:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:26:02,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:26:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:26:02,170 INFO L87 Difference]: Start difference. First operand 516 states and 663 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:26:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:02,307 INFO L93 Difference]: Finished difference Result 516 states and 663 transitions. [2023-11-28 20:26:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:26:02,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 122 [2023-11-28 20:26:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:02,310 INFO L225 Difference]: With dead ends: 516 [2023-11-28 20:26:02,310 INFO L226 Difference]: Without dead ends: 515 [2023-11-28 20:26:02,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:26:02,311 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:02,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 58 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:26:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-11-28 20:26:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2023-11-28 20:26:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 425 states have (on average 1.171764705882353) internal successors, (498), 434 states have internal predecessors, (498), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-28 20:26:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 656 transitions. [2023-11-28 20:26:02,399 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 656 transitions. Word has length 122 [2023-11-28 20:26:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:02,399 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 656 transitions. [2023-11-28 20:26:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-28 20:26:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 656 transitions. [2023-11-28 20:26:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-28 20:26:02,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:02,401 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 20:26:02,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-28 20:26:02,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-28 20:26:02,601 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:02,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash -826273142, now seen corresponding path program 4 times [2023-11-28 20:26:02,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:02,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513500645] [2023-11-28 20:26:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:02,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:02,609 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:02,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721629518] [2023-11-28 20:26:02,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:26:02,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:02,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:02,610 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:02,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-28 20:26:02,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:26:02,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:02,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 20:26:02,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:26:03,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:03,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513500645] [2023-11-28 20:26:03,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:03,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721629518] [2023-11-28 20:26:03,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721629518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:03,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:03,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-28 20:26:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328510613] [2023-11-28 20:26:03,637 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:03,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:26:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:26:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-28 20:26:03,638 INFO L87 Difference]: Start difference. First operand 515 states and 656 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-28 20:26:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:04,383 INFO L93 Difference]: Finished difference Result 563 states and 706 transitions. [2023-11-28 20:26:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 20:26:04,383 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 125 [2023-11-28 20:26:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:04,386 INFO L225 Difference]: With dead ends: 563 [2023-11-28 20:26:04,386 INFO L226 Difference]: Without dead ends: 562 [2023-11-28 20:26:04,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-11-28 20:26:04,387 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 58 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:04,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 341 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:26:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-28 20:26:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 519. [2023-11-28 20:26:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 429 states have (on average 1.17016317016317) internal successors, (502), 438 states have internal predecessors, (502), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-28 20:26:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 660 transitions. [2023-11-28 20:26:04,482 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 660 transitions. Word has length 125 [2023-11-28 20:26:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:04,482 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 660 transitions. [2023-11-28 20:26:04,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 5 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-28 20:26:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 660 transitions. [2023-11-28 20:26:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-28 20:26:04,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:04,484 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:04,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-11-28 20:26:04,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-28 20:26:04,684 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:04,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash 664607779, now seen corresponding path program 1 times [2023-11-28 20:26:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089344128] [2023-11-28 20:26:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:04,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:04,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709341618] [2023-11-28 20:26:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:04,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:04,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:04,698 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:04,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-28 20:26:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:04,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 20:26:04,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-28 20:26:05,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:05,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:05,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089344128] [2023-11-28 20:26:05,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:05,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709341618] [2023-11-28 20:26:05,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709341618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:05,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:05,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-28 20:26:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441866374] [2023-11-28 20:26:05,288 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 20:26:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 20:26:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:26:05,290 INFO L87 Difference]: Start difference. First operand 519 states and 660 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-28 20:26:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:05,742 INFO L93 Difference]: Finished difference Result 528 states and 666 transitions. [2023-11-28 20:26:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:26:05,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 135 [2023-11-28 20:26:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:05,746 INFO L225 Difference]: With dead ends: 528 [2023-11-28 20:26:05,746 INFO L226 Difference]: Without dead ends: 526 [2023-11-28 20:26:05,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:26:05,747 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 54 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:05,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 252 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:26:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-28 20:26:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 509. [2023-11-28 20:26:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 421 states have (on average 1.168646080760095) internal successors, (492), 430 states have internal predecessors, (492), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-28 20:26:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 646 transitions. [2023-11-28 20:26:05,805 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 646 transitions. Word has length 135 [2023-11-28 20:26:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:05,805 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 646 transitions. [2023-11-28 20:26:05,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-28 20:26:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 646 transitions. [2023-11-28 20:26:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-28 20:26:05,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:05,807 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:05,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-28 20:26:06,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-28 20:26:06,008 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:06,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash -871995211, now seen corresponding path program 1 times [2023-11-28 20:26:06,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:06,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909627598] [2023-11-28 20:26:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:06,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:06,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:06,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742632635] [2023-11-28 20:26:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:06,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:06,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:06,016 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:06,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-28 20:26:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:06,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-28 20:26:06,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-28 20:26:06,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:11,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:11,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909627598] [2023-11-28 20:26:11,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:11,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742632635] [2023-11-28 20:26:11,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742632635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:11,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:11,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-28 20:26:11,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289199667] [2023-11-28 20:26:11,236 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 20:26:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:11,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 20:26:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2023-11-28 20:26:11,238 INFO L87 Difference]: Start difference. First operand 509 states and 646 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 12 states have internal predecessors, (64), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-28 20:26:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:11,623 INFO L93 Difference]: Finished difference Result 598 states and 754 transitions. [2023-11-28 20:26:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:26:11,624 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 12 states have internal predecessors, (64), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 136 [2023-11-28 20:26:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:11,627 INFO L225 Difference]: With dead ends: 598 [2023-11-28 20:26:11,627 INFO L226 Difference]: Without dead ends: 489 [2023-11-28 20:26:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2023-11-28 20:26:11,628 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 11 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:11,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 241 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:26:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-28 20:26:11,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2023-11-28 20:26:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 400 states have (on average 1.1625) internal successors, (465), 409 states have internal predecessors, (465), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-28 20:26:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 615 transitions. [2023-11-28 20:26:11,692 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 615 transitions. Word has length 136 [2023-11-28 20:26:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:11,692 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 615 transitions. [2023-11-28 20:26:11,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 12 states have internal predecessors, (64), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-28 20:26:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 615 transitions. [2023-11-28 20:26:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-28 20:26:11,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:11,694 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:26:11,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-11-28 20:26:11,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-28 20:26:11,894 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:11,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash -468771145, now seen corresponding path program 1 times [2023-11-28 20:26:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:11,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993260098] [2023-11-28 20:26:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:11,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:11,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084054151] [2023-11-28 20:26:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:11,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:11,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:11,904 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:11,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-28 20:26:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:11,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 20:26:11,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-28 20:26:12,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993260098] [2023-11-28 20:26:12,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:12,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084054151] [2023-11-28 20:26:12,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084054151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:12,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:12,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-28 20:26:12,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156136733] [2023-11-28 20:26:12,367 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:12,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 20:26:12,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 20:26:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:26:12,368 INFO L87 Difference]: Start difference. First operand 486 states and 615 transitions. Second operand has 11 states, 10 states have (on average 6.6) internal successors, (66), 11 states have internal predecessors, (66), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-28 20:26:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:12,724 INFO L93 Difference]: Finished difference Result 518 states and 649 transitions. [2023-11-28 20:26:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:26:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 11 states have internal predecessors, (66), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 138 [2023-11-28 20:26:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:12,726 INFO L225 Difference]: With dead ends: 518 [2023-11-28 20:26:12,726 INFO L226 Difference]: Without dead ends: 499 [2023-11-28 20:26:12,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-28 20:26:12,727 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 69 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:12,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 419 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:26:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-28 20:26:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 492. [2023-11-28 20:26:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 406 states have (on average 1.167487684729064) internal successors, (474), 415 states have internal predecessors, (474), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-28 20:26:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 624 transitions. [2023-11-28 20:26:12,794 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 624 transitions. Word has length 138 [2023-11-28 20:26:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:12,794 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 624 transitions. [2023-11-28 20:26:12,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.6) internal successors, (66), 11 states have internal predecessors, (66), 6 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-28 20:26:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 624 transitions. [2023-11-28 20:26:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-28 20:26:12,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:12,796 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-28 20:26:12,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-28 20:26:12,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:12,996 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:12,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash -101727511, now seen corresponding path program 3 times [2023-11-28 20:26:12,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:12,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911801054] [2023-11-28 20:26:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:12,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:13,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311123148] [2023-11-28 20:26:13,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:26:13,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:13,005 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:13,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-28 20:26:13,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 20:26:13,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:13,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:26:13,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:13,198 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2023-11-28 20:26:13,198 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911801054] [2023-11-28 20:26:18,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311123148] [2023-11-28 20:26:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311123148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:18,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:18,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-28 20:26:18,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392174314] [2023-11-28 20:26:18,223 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:18,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:26:18,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:18,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:26:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:26:18,225 INFO L87 Difference]: Start difference. First operand 492 states and 624 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:26:18,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:18,621 INFO L93 Difference]: Finished difference Result 494 states and 626 transitions. [2023-11-28 20:26:18,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:26:18,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 139 [2023-11-28 20:26:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:18,624 INFO L225 Difference]: With dead ends: 494 [2023-11-28 20:26:18,624 INFO L226 Difference]: Without dead ends: 492 [2023-11-28 20:26:18,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2023-11-28 20:26:18,625 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:18,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 86 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:26:18,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-11-28 20:26:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 490. [2023-11-28 20:26:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 405 states have (on average 1.1604938271604939) internal successors, (470), 413 states have internal predecessors, (470), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-28 20:26:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 620 transitions. [2023-11-28 20:26:18,679 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 620 transitions. Word has length 139 [2023-11-28 20:26:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:18,679 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 620 transitions. [2023-11-28 20:26:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:26:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 620 transitions. [2023-11-28 20:26:18,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-28 20:26:18,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:18,680 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 20:26:18,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-28 20:26:18,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:18,881 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:18,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1980405781, now seen corresponding path program 1 times [2023-11-28 20:26:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:18,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970238052] [2023-11-28 20:26:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:18,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:18,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005712268] [2023-11-28 20:26:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:18,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:18,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:18,891 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:18,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-28 20:26:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:26:18,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 20:26:18,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-28 20:26:19,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2023-11-28 20:26:23,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:23,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970238052] [2023-11-28 20:26:23,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:23,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005712268] [2023-11-28 20:26:23,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005712268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:26:23,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:26:23,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 22 [2023-11-28 20:26:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204446794] [2023-11-28 20:26:23,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:23,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 20:26:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 20:26:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2023-11-28 20:26:23,042 INFO L87 Difference]: Start difference. First operand 490 states and 620 transitions. Second operand has 23 states, 22 states have (on average 6.5) internal successors, (143), 23 states have internal predecessors, (143), 12 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2023-11-28 20:26:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:26,401 INFO L93 Difference]: Finished difference Result 735 states and 916 transitions. [2023-11-28 20:26:26,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-28 20:26:26,401 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.5) internal successors, (143), 23 states have internal predecessors, (143), 12 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) Word has length 145 [2023-11-28 20:26:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:26,406 INFO L225 Difference]: With dead ends: 735 [2023-11-28 20:26:26,406 INFO L226 Difference]: Without dead ends: 733 [2023-11-28 20:26:26,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=510, Invalid=822, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 20:26:26,407 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 405 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:26,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 462 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-28 20:26:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-11-28 20:26:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 585. [2023-11-28 20:26:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 490 states have (on average 1.1775510204081632) internal successors, (577), 498 states have internal predecessors, (577), 85 states have call successors, (85), 1 states have call predecessors, (85), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-28 20:26:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 747 transitions. [2023-11-28 20:26:26,497 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 747 transitions. Word has length 145 [2023-11-28 20:26:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:26,498 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 747 transitions. [2023-11-28 20:26:26,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.5) internal successors, (143), 23 states have internal predecessors, (143), 12 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 12 states have call predecessors, (30), 12 states have call successors, (30) [2023-11-28 20:26:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 747 transitions. [2023-11-28 20:26:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-28 20:26:26,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:26,499 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 20:26:26,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-28 20:26:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:26,699 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:26,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2057340396, now seen corresponding path program 5 times [2023-11-28 20:26:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:26,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445591709] [2023-11-28 20:26:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:26,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:26,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:26,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634528967] [2023-11-28 20:26:26,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 20:26:26,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:26,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:26,707 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:26,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-28 20:26:26,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-28 20:26:26,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:26,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-28 20:26:26,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 33 proven. 95 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-28 20:26:27,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:26:28,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:26:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445591709] [2023-11-28 20:26:28,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:26:28,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634528967] [2023-11-28 20:26:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634528967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:26:28,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:26:28,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-28 20:26:28,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843303694] [2023-11-28 20:26:28,324 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:26:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 20:26:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:26:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 20:26:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-11-28 20:26:28,326 INFO L87 Difference]: Start difference. First operand 585 states and 747 transitions. Second operand has 20 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 20 states have internal predecessors, (74), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-28 20:26:29,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:26:29,538 INFO L93 Difference]: Finished difference Result 685 states and 862 transitions. [2023-11-28 20:26:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 20:26:29,539 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 20 states have internal predecessors, (74), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 148 [2023-11-28 20:26:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:26:29,542 INFO L225 Difference]: With dead ends: 685 [2023-11-28 20:26:29,542 INFO L226 Difference]: Without dead ends: 684 [2023-11-28 20:26:29,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:26:29,543 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 49 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:26:29,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 561 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-28 20:26:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-11-28 20:26:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 638. [2023-11-28 20:26:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 537 states have (on average 1.1675977653631284) internal successors, (627), 545 states have internal predecessors, (627), 91 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-28 20:26:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 809 transitions. [2023-11-28 20:26:29,639 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 809 transitions. Word has length 148 [2023-11-28 20:26:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:26:29,640 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 809 transitions. [2023-11-28 20:26:29,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.8947368421052633) internal successors, (74), 20 states have internal predecessors, (74), 6 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-28 20:26:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 809 transitions. [2023-11-28 20:26:29,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-28 20:26:29,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:26:29,641 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 20:26:29,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-28 20:26:29,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:29,841 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:26:29,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:26:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -742223659, now seen corresponding path program 6 times [2023-11-28 20:26:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:26:29,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815473624] [2023-11-28 20:26:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:26:29,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:26:29,850 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:26:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505368082] [2023-11-28 20:26:29,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-28 20:26:29,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:26:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:26:29,852 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:26:29,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-28 20:26:29,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-11-28 20:26:29,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:26:29,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-28 20:26:29,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:26:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 95 proven. 66 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-11-28 20:26:30,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:27:00,705 WARN L293 SmtUtils]: Spent 16.30s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:27:33,582 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-28 20:27:53,130 WARN L293 SmtUtils]: Spent 18.50s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:28:14,821 WARN L293 SmtUtils]: Spent 12.33s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:29:24,113 WARN L293 SmtUtils]: Spent 9.37s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:29:46,265 WARN L293 SmtUtils]: Spent 12.24s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:30:10,840 WARN L293 SmtUtils]: Spent 7.49s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-28 20:30:28,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815473624] [2023-11-28 20:30:28,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505368082] [2023-11-28 20:30:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505368082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:30:28,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:30:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-28 20:30:28,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649396821] [2023-11-28 20:30:28,349 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:30:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-28 20:30:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-28 20:30:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=704, Unknown=4, NotChecked=0, Total=870 [2023-11-28 20:30:28,350 INFO L87 Difference]: Start difference. First operand 638 states and 809 transitions. Second operand has 17 states, 16 states have (on average 4.5) internal successors, (72), 15 states have internal predecessors, (72), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-28 20:30:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:30,181 INFO L93 Difference]: Finished difference Result 660 states and 832 transitions. [2023-11-28 20:30:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 20:30:30,182 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 15 states have internal predecessors, (72), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 152 [2023-11-28 20:30:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:30,186 INFO L225 Difference]: With dead ends: 660 [2023-11-28 20:30:30,186 INFO L226 Difference]: Without dead ends: 659 [2023-11-28 20:30:30,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 92.4s TimeCoverageRelationStatistics Valid=381, Invalid=1421, Unknown=4, NotChecked=0, Total=1806 [2023-11-28 20:30:30,188 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:30,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 206 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:30:30,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-28 20:30:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 638. [2023-11-28 20:30:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 537 states have (on average 1.1638733705772812) internal successors, (625), 545 states have internal predecessors, (625), 91 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-28 20:30:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 807 transitions. [2023-11-28 20:30:30,302 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 807 transitions. Word has length 152 [2023-11-28 20:30:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:30,303 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 807 transitions. [2023-11-28 20:30:30,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5) internal successors, (72), 15 states have internal predecessors, (72), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-28 20:30:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 807 transitions. [2023-11-28 20:30:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-28 20:30:30,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:30,305 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:30:30,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-11-28 20:30:30,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:30,505 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:30:30,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1420572949, now seen corresponding path program 2 times [2023-11-28 20:30:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025741203] [2023-11-28 20:30:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:30,515 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176117467] [2023-11-28 20:30:30,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:30:30,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:30,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:30,517 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:30,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-28 20:30:30,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:30:30,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:30:30,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 20:30:30,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:30:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-28 20:30:30,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:30:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 54 proven. 35 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-28 20:30:31,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025741203] [2023-11-28 20:30:31,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176117467] [2023-11-28 20:30:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176117467] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:30:31,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:30:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 13 [2023-11-28 20:30:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782035425] [2023-11-28 20:30:31,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:30:31,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 20:30:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 20:30:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:30:31,416 INFO L87 Difference]: Start difference. First operand 638 states and 807 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 8 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-28 20:30:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:32,075 INFO L93 Difference]: Finished difference Result 648 states and 812 transitions. [2023-11-28 20:30:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:30:32,076 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 8 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 159 [2023-11-28 20:30:32,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:32,078 INFO L225 Difference]: With dead ends: 648 [2023-11-28 20:30:32,078 INFO L226 Difference]: Without dead ends: 642 [2023-11-28 20:30:32,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 299 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:30:32,079 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 96 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:32,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 281 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:30:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-11-28 20:30:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 638. [2023-11-28 20:30:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 537 states have (on average 1.1545623836126628) internal successors, (620), 545 states have internal predecessors, (620), 91 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-28 20:30:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 802 transitions. [2023-11-28 20:30:32,172 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 802 transitions. Word has length 159 [2023-11-28 20:30:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:32,172 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 802 transitions. [2023-11-28 20:30:32,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 8 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-11-28 20:30:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 802 transitions. [2023-11-28 20:30:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-28 20:30:32,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:32,175 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-28 20:30:32,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-11-28 20:30:32,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-28 20:30:32,375 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:30:32,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1573610102, now seen corresponding path program 3 times [2023-11-28 20:30:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:32,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90484581] [2023-11-28 20:30:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:32,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:32,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:32,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198259354] [2023-11-28 20:30:32,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:30:32,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:32,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:32,383 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:32,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-28 20:30:32,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 20:30:32,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:30:32,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 20:30:32,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:30:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-11-28 20:30:32,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:30:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-11-28 20:30:32,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90484581] [2023-11-28 20:30:32,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:32,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198259354] [2023-11-28 20:30:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198259354] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 20:30:32,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:30:32,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-28 20:30:32,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947818233] [2023-11-28 20:30:32,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:30:32,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:30:32,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:30:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:30:32,969 INFO L87 Difference]: Start difference. First operand 638 states and 802 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:30:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:33,617 INFO L93 Difference]: Finished difference Result 642 states and 805 transitions. [2023-11-28 20:30:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:30:33,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-11-28 20:30:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:33,621 INFO L225 Difference]: With dead ends: 642 [2023-11-28 20:30:33,621 INFO L226 Difference]: Without dead ends: 639 [2023-11-28 20:30:33,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:30:33,622 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:33,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 57 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:30:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-11-28 20:30:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 635. [2023-11-28 20:30:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 535 states have (on average 1.1514018691588785) internal successors, (616), 542 states have internal predecessors, (616), 91 states have call successors, (91), 1 states have call predecessors, (91), 1 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-28 20:30:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 798 transitions. [2023-11-28 20:30:33,751 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 798 transitions. Word has length 163 [2023-11-28 20:30:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:33,752 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 798 transitions. [2023-11-28 20:30:33,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-28 20:30:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 798 transitions. [2023-11-28 20:30:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-28 20:30:33,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:33,754 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-28 20:30:33,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-28 20:30:33,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-28 20:30:33,954 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:30:33,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash 144100507, now seen corresponding path program 1 times [2023-11-28 20:30:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869740914] [2023-11-28 20:30:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:33,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:33,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:33,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005871853] [2023-11-28 20:30:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:33,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:33,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:33,968 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:33,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-28 20:30:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:30:34,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-28 20:30:34,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:30:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-28 20:30:34,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:30:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-28 20:30:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869740914] [2023-11-28 20:30:41,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:41,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005871853] [2023-11-28 20:30:41,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005871853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:30:41,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:30:41,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2023-11-28 20:30:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36200925] [2023-11-28 20:30:41,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:30:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 20:30:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 20:30:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-28 20:30:41,858 INFO L87 Difference]: Start difference. First operand 635 states and 798 transitions. Second operand has 19 states, 18 states have (on average 8.61111111111111) internal successors, (155), 19 states have internal predecessors, (155), 12 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-11-28 20:30:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:45,818 INFO L93 Difference]: Finished difference Result 1188 states and 1462 transitions. [2023-11-28 20:30:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 20:30:45,819 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 8.61111111111111) internal successors, (155), 19 states have internal predecessors, (155), 12 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 166 [2023-11-28 20:30:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:45,824 INFO L225 Difference]: With dead ends: 1188 [2023-11-28 20:30:45,825 INFO L226 Difference]: Without dead ends: 1187 [2023-11-28 20:30:45,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=325, Invalid=545, Unknown=0, NotChecked=0, Total=870 [2023-11-28 20:30:45,826 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 492 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:45,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 555 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-28 20:30:45,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2023-11-28 20:30:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 928. [2023-11-28 20:30:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 794 states have (on average 1.1586901763224182) internal successors, (920), 801 states have internal predecessors, (920), 125 states have call successors, (125), 1 states have call predecessors, (125), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2023-11-28 20:30:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1170 transitions. [2023-11-28 20:30:46,054 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1170 transitions. Word has length 166 [2023-11-28 20:30:46,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:46,054 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1170 transitions. [2023-11-28 20:30:46,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 8.61111111111111) internal successors, (155), 19 states have internal predecessors, (155), 12 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-11-28 20:30:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1170 transitions. [2023-11-28 20:30:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-28 20:30:46,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:46,057 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:30:46,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-28 20:30:46,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-28 20:30:46,258 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:30:46,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:46,258 INFO L85 PathProgramCache]: Analyzing trace with hash 663960390, now seen corresponding path program 1 times [2023-11-28 20:30:46,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:46,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735252413] [2023-11-28 20:30:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:46,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:46,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048838323] [2023-11-28 20:30:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:46,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:46,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:46,273 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:46,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-28 20:30:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:30:46,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-28 20:30:46,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:30:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-28 20:30:47,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:30:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:47,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735252413] [2023-11-28 20:30:47,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:47,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048838323] [2023-11-28 20:30:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048838323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:30:47,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:30:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-28 20:30:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892708705] [2023-11-28 20:30:47,300 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:30:47,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 20:30:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:47,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 20:30:47,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-28 20:30:47,302 INFO L87 Difference]: Start difference. First operand 928 states and 1170 transitions. Second operand has 16 states, 15 states have (on average 5.8) internal successors, (87), 16 states have internal predecessors, (87), 7 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-28 20:30:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:48,728 INFO L93 Difference]: Finished difference Result 934 states and 1174 transitions. [2023-11-28 20:30:48,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 20:30:48,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.8) internal successors, (87), 16 states have internal predecessors, (87), 7 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 169 [2023-11-28 20:30:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:48,734 INFO L225 Difference]: With dead ends: 934 [2023-11-28 20:30:48,734 INFO L226 Difference]: Without dead ends: 929 [2023-11-28 20:30:48,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-28 20:30:48,735 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 28 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:48,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 471 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-28 20:30:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-11-28 20:30:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 913. [2023-11-28 20:30:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 781 states have (on average 1.1562099871959026) internal successors, (903), 788 states have internal predecessors, (903), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2023-11-28 20:30:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1149 transitions. [2023-11-28 20:30:48,954 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1149 transitions. Word has length 169 [2023-11-28 20:30:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:48,954 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1149 transitions. [2023-11-28 20:30:48,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.8) internal successors, (87), 16 states have internal predecessors, (87), 7 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-28 20:30:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1149 transitions. [2023-11-28 20:30:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-28 20:30:48,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:48,956 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 20:30:48,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-28 20:30:49,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-28 20:30:49,157 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:30:49,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1160984394, now seen corresponding path program 7 times [2023-11-28 20:30:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:49,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796921319] [2023-11-28 20:30:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:49,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:49,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971523867] [2023-11-28 20:30:49,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-28 20:30:49,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:49,168 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:49,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-28 20:30:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:30:49,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 20:30:49,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:30:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-28 20:30:51,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:30:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796921319] [2023-11-28 20:30:52,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:52,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971523867] [2023-11-28 20:30:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971523867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:30:52,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:30:52,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-28 20:30:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099887721] [2023-11-28 20:30:52,689 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:30:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 20:30:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 20:30:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-11-28 20:30:52,690 INFO L87 Difference]: Start difference. First operand 913 states and 1149 transitions. Second operand has 18 states, 17 states have (on average 4.647058823529412) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-28 20:30:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:54,697 INFO L93 Difference]: Finished difference Result 1032 states and 1286 transitions. [2023-11-28 20:30:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-28 20:30:54,698 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.647058823529412) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 171 [2023-11-28 20:30:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:54,702 INFO L225 Difference]: With dead ends: 1032 [2023-11-28 20:30:54,702 INFO L226 Difference]: Without dead ends: 1031 [2023-11-28 20:30:54,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2023-11-28 20:30:54,703 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 130 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:54,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 532 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-28 20:30:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-11-28 20:30:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 966. [2023-11-28 20:30:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 828 states have (on average 1.1497584541062802) internal successors, (952), 835 states have internal predecessors, (952), 129 states have call successors, (129), 1 states have call predecessors, (129), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-11-28 20:30:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1210 transitions. [2023-11-28 20:30:54,884 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1210 transitions. Word has length 171 [2023-11-28 20:30:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:54,884 INFO L495 AbstractCegarLoop]: Abstraction has 966 states and 1210 transitions. [2023-11-28 20:30:54,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.647058823529412) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-28 20:30:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1210 transitions. [2023-11-28 20:30:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-28 20:30:54,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:54,886 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-28 20:30:54,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-28 20:30:55,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:55,087 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:30:55,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:55,087 INFO L85 PathProgramCache]: Analyzing trace with hash 241255185, now seen corresponding path program 2 times [2023-11-28 20:30:55,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:55,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920554165] [2023-11-28 20:30:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:55,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:55,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113982791] [2023-11-28 20:30:55,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:30:55,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:55,099 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:55,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-28 20:30:55,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:30:55,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:30:55,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 20:30:55,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:30:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-28 20:30:56,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:30:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:30:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920554165] [2023-11-28 20:30:56,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:30:56,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113982791] [2023-11-28 20:30:56,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113982791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:30:56,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:30:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-28 20:30:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164479612] [2023-11-28 20:30:56,459 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:30:56,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 20:30:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:30:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 20:30:56,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-28 20:30:56,461 INFO L87 Difference]: Start difference. First operand 966 states and 1210 transitions. Second operand has 15 states, 14 states have (on average 6.0) internal successors, (84), 15 states have internal predecessors, (84), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-28 20:30:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:30:58,296 INFO L93 Difference]: Finished difference Result 1058 states and 1315 transitions. [2023-11-28 20:30:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 20:30:58,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.0) internal successors, (84), 15 states have internal predecessors, (84), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 171 [2023-11-28 20:30:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:30:58,302 INFO L225 Difference]: With dead ends: 1058 [2023-11-28 20:30:58,302 INFO L226 Difference]: Without dead ends: 1047 [2023-11-28 20:30:58,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-28 20:30:58,303 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 128 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:30:58,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 975 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-28 20:30:58,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2023-11-28 20:30:58,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 991. [2023-11-28 20:30:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 849 states have (on average 1.1389870435806833) internal successors, (967), 856 states have internal predecessors, (967), 133 states have call successors, (133), 1 states have call predecessors, (133), 1 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2023-11-28 20:30:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1233 transitions. [2023-11-28 20:30:58,543 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1233 transitions. Word has length 171 [2023-11-28 20:30:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:30:58,544 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1233 transitions. [2023-11-28 20:30:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.0) internal successors, (84), 15 states have internal predecessors, (84), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-28 20:30:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1233 transitions. [2023-11-28 20:30:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-28 20:30:58,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:30:58,547 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1] [2023-11-28 20:30:58,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-28 20:30:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:58,748 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:30:58,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:30:58,749 INFO L85 PathProgramCache]: Analyzing trace with hash -597114101, now seen corresponding path program 8 times [2023-11-28 20:30:58,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:30:58,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86693806] [2023-11-28 20:30:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:30:58,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:30:58,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:30:58,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478615755] [2023-11-28 20:30:58,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:30:58,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:30:58,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:30:58,762 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:30:58,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-28 20:30:58,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:30:58,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:30:58,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-28 20:30:58,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:31:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-28 20:31:00,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:31:00,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:31:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86693806] [2023-11-28 20:31:00,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:31:00,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478615755] [2023-11-28 20:31:00,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478615755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:31:00,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:31:00,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-28 20:31:00,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653190679] [2023-11-28 20:31:00,861 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 20:31:00,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 20:31:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:31:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 20:31:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2023-11-28 20:31:00,862 INFO L87 Difference]: Start difference. First operand 991 states and 1233 transitions. Second operand has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 20 states have internal predecessors, (88), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-28 20:31:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:31:02,726 INFO L93 Difference]: Finished difference Result 1096 states and 1359 transitions. [2023-11-28 20:31:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 20:31:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 20 states have internal predecessors, (88), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 175 [2023-11-28 20:31:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:31:02,731 INFO L225 Difference]: With dead ends: 1096 [2023-11-28 20:31:02,732 INFO L226 Difference]: Without dead ends: 1090 [2023-11-28 20:31:02,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:31:02,732 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:31:02,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 519 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-28 20:31:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2023-11-28 20:31:02,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1002. [2023-11-28 20:31:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 858 states have (on average 1.1375291375291374) internal successors, (976), 865 states have internal predecessors, (976), 135 states have call successors, (135), 1 states have call predecessors, (135), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2023-11-28 20:31:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1246 transitions. [2023-11-28 20:31:02,930 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1246 transitions. Word has length 175 [2023-11-28 20:31:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:31:02,930 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1246 transitions. [2023-11-28 20:31:02,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 20 states have internal predecessors, (88), 7 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2023-11-28 20:31:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1246 transitions. [2023-11-28 20:31:02,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-28 20:31:02,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:31:02,933 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1] [2023-11-28 20:31:02,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-28 20:31:03,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-11-28 20:31:03,133 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:31:03,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:31:03,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1967650537, now seen corresponding path program 2 times [2023-11-28 20:31:03,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:31:03,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716892911] [2023-11-28 20:31:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:31:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:31:03,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:31:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911602176] [2023-11-28 20:31:03,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:31:03,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:31:03,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:31:03,146 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:31:03,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-28 20:31:03,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:31:03,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:31:03,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-28 20:31:03,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:31:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-11-28 20:31:03,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:31:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 0 proven. 151 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-11-28 20:31:11,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:31:11,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716892911] [2023-11-28 20:31:11,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:31:11,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911602176] [2023-11-28 20:31:11,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911602176] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:31:11,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:31:11,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2023-11-28 20:31:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705722132] [2023-11-28 20:31:11,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:31:11,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 20:31:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:31:11,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 20:31:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2023-11-28 20:31:11,871 INFO L87 Difference]: Start difference. First operand 1002 states and 1246 transitions. Second operand has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 24 states have internal predecessors, (179), 14 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) [2023-11-28 20:31:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:31:16,033 INFO L93 Difference]: Finished difference Result 1479 states and 1816 transitions. [2023-11-28 20:31:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:31:16,034 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 24 states have internal predecessors, (179), 14 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) Word has length 193 [2023-11-28 20:31:16,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:31:16,041 INFO L225 Difference]: With dead ends: 1479 [2023-11-28 20:31:16,041 INFO L226 Difference]: Without dead ends: 1478 [2023-11-28 20:31:16,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=433, Invalid=757, Unknown=0, NotChecked=0, Total=1190 [2023-11-28 20:31:16,042 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 952 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:31:16,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 739 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-28 20:31:16,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2023-11-28 20:31:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1172. [2023-11-28 20:31:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1008 states have (on average 1.1398809523809523) internal successors, (1149), 1015 states have internal predecessors, (1149), 155 states have call successors, (155), 1 states have call predecessors, (155), 1 states have return successors, (155), 155 states have call predecessors, (155), 155 states have call successors, (155) [2023-11-28 20:31:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1459 transitions. [2023-11-28 20:31:16,327 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1459 transitions. Word has length 193 [2023-11-28 20:31:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:31:16,328 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1459 transitions. [2023-11-28 20:31:16,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 7.782608695652174) internal successors, (179), 24 states have internal predecessors, (179), 14 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 14 states have call predecessors, (42), 14 states have call successors, (42) [2023-11-28 20:31:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1459 transitions. [2023-11-28 20:31:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-28 20:31:16,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:31:16,335 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-28 20:31:16,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-11-28 20:31:16,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-11-28 20:31:16,536 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-28 20:31:16,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:31:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1227948716, now seen corresponding path program 9 times [2023-11-28 20:31:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:31:16,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620035056] [2023-11-28 20:31:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:31:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:31:16,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 20:31:16,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278841418] [2023-11-28 20:31:16,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:31:16,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:31:16,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:31:16,546 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:31:16,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7266ac42-a5a6-4ee1-8862-4cd172718539/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-28 20:31:16,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-28 20:31:16,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:31:16,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-28 20:31:16,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:31:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 145 proven. 32 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2023-11-28 20:31:19,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:32:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1098 backedges. 60 proven. 117 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2023-11-28 20:32:46,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:32:46,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620035056] [2023-11-28 20:32:46,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 20:32:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278841418] [2023-11-28 20:32:46,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278841418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:32:46,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:32:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-11-28 20:32:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042098744] [2023-11-28 20:32:46,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 20:32:46,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-28 20:32:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:32:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-28 20:32:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2023-11-28 20:32:46,499 INFO L87 Difference]: Start difference. First operand 1172 states and 1459 transitions. Second operand has 31 states, 30 states have (on average 4.466666666666667) internal successors, (134), 31 states have internal predecessors, (134), 10 states have call successors, (26), 1 states have call predecessors, (26), 2 states have return successors, (26), 8 states have call predecessors, (26), 10 states have call successors, (26) [2023-11-28 20:33:06,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:33:19,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:34:21,263 WARN L293 SmtUtils]: Spent 56.23s on a formula simplification. DAG size of input: 144 DAG size of output: 155 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:34:39,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:34:42,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:34:46,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:35:59,728 WARN L293 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 146 DAG size of output: 158 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:36:04,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:05,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:07,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:12,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:16,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:20,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:21,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:27,240 WARN L293 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:36:31,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:36:34,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-28 20:37:32,966 WARN L293 SmtUtils]: Spent 53.97s on a formula simplification. DAG size of input: 120 DAG size of output: 131 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:37:34,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:37:36,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-28 20:37:39,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-28 20:37:44,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:37:48,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-11-28 20:39:01,837 WARN L293 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 138 DAG size of output: 138 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:39:06,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []