./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d03c67e233c08f2056b22cded14e60e5b8002325e3ed3bc9a6e35392b69429b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:00,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:00,715 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:47:00,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:00,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:00,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:00,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:00,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:00,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:00,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:00,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:00,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:00,755 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:00,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:00,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:00,757 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:00,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:00,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:00,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:00,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:00,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:00,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:00,762 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:47:00,762 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:00,763 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:00,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:00,764 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:00,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:00,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:00,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:00,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:00,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:00,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:00,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:00,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:00,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:00,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:00,770 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:00,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:00,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:00,771 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:00,771 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_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d03c67e233c08f2056b22cded14e60e5b8002325e3ed3bc9a6e35392b69429b7 [2023-11-19 07:47:01,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:01,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:01,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:01,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:01,070 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:01,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2023-11-19 07:47:04,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:04,554 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:04,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2023-11-19 07:47:04,565 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/data/0b0da45be/984cc8a9895e4050b75cf99f6bfd2625/FLAGdb3105810 [2023-11-19 07:47:04,581 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/data/0b0da45be/984cc8a9895e4050b75cf99f6bfd2625 [2023-11-19 07:47:04,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:04,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:04,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:04,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:04,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:04,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abe692c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04, skipping insertion in model container [2023-11-19 07:47:04,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,628 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:04,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:04,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:04,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:04,870 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:04,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04 WrapperNode [2023-11-19 07:47:04,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:04,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:04,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:04,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:04,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,919 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2023-11-19 07:47:04,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:04,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:04,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:04,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:04,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:04,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:04,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:04,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:04,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (1/1) ... [2023-11-19 07:47:04,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:04,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:05,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:05,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:05,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:05,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:05,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:05,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:47:05,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:47:05,103 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:05,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:05,376 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:05,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:05,385 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:05,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:05 BoogieIcfgContainer [2023-11-19 07:47:05,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:05,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:05,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:05,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:05,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:04" (1/3) ... [2023-11-19 07:47:05,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b8cd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:05, skipping insertion in model container [2023-11-19 07:47:05,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:04" (2/3) ... [2023-11-19 07:47:05,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b8cd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:05, skipping insertion in model container [2023-11-19 07:47:05,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:05" (3/3) ... [2023-11-19 07:47:05,401 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound20.c [2023-11-19 07:47:05,421 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:05,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 07:47:05,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:05,478 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;@3e958d9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:05,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-19 07:47:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 73 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:47:05,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:05,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:05,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:05,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:05,507 INFO L85 PathProgramCache]: Analyzing trace with hash 257698101, now seen corresponding path program 1 times [2023-11-19 07:47:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:05,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892074853] [2023-11-19 07:47:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:05,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:05,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892074853] [2023-11-19 07:47:05,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:47:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938361568] [2023-11-19 07:47:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:05,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:05,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:05,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:05,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:05,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:47:05,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:05,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:05,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938361568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:05,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:05,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639803950] [2023-11-19 07:47:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:05,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:05,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:05,862 INFO L87 Difference]: Start difference. First operand has 80 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 73 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:47:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:05,888 INFO L93 Difference]: Finished difference Result 156 states and 171 transitions. [2023-11-19 07:47:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:05,890 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-19 07:47:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:05,897 INFO L225 Difference]: With dead ends: 156 [2023-11-19 07:47:05,898 INFO L226 Difference]: Without dead ends: 73 [2023-11-19 07:47:05,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:05,905 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:05,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-19 07:47:05,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-19 07:47:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.7) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2023-11-19 07:47:05,948 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 16 [2023-11-19 07:47:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:05,948 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2023-11-19 07:47:05,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:47:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2023-11-19 07:47:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:47:05,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:05,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:05,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:47:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:47:06,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:06,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash 573120432, now seen corresponding path program 1 times [2023-11-19 07:47:06,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867749602] [2023-11-19 07:47:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:06,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:06,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804796571] [2023-11-19 07:47:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:06,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:06,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:06,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:06,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:06,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:06,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:06,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:06,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:06,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867749602] [2023-11-19 07:47:06,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:06,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804796571] [2023-11-19 07:47:06,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804796571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:06,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:06,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:06,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729047221] [2023-11-19 07:47:06,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:06,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:06,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:06,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:06,405 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-19 07:47:06,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:06,930 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2023-11-19 07:47:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 16 [2023-11-19 07:47:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:06,932 INFO L225 Difference]: With dead ends: 128 [2023-11-19 07:47:06,933 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 07:47:06,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:06,935 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 103 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:06,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 51 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 07:47:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 96. [2023-11-19 07:47:06,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.6612903225806452) internal successors, (103), 89 states have internal predecessors, (103), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2023-11-19 07:47:06,952 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 16 [2023-11-19 07:47:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:06,954 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2023-11-19 07:47:06,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-19 07:47:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2023-11-19 07:47:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:47:06,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:06,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:06,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:07,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:07,177 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:07,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash 586864257, now seen corresponding path program 1 times [2023-11-19 07:47:07,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713168622] [2023-11-19 07:47:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:07,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084142064] [2023-11-19 07:47:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:07,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:07,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:07,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:07,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:07,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:07,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713168622] [2023-11-19 07:47:07,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084142064] [2023-11-19 07:47:07,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084142064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:07,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:07,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:07,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051799622] [2023-11-19 07:47:07,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:07,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:07,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:07,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:07,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:07,318 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-19 07:47:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:07,568 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2023-11-19 07:47:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:07,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 17 [2023-11-19 07:47:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:07,570 INFO L225 Difference]: With dead ends: 120 [2023-11-19 07:47:07,570 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:47:07,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:07,572 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 94 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:07,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 51 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:07,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:47:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2023-11-19 07:47:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.546875) internal successors, (99), 91 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2023-11-19 07:47:07,588 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 17 [2023-11-19 07:47:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:07,590 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2023-11-19 07:47:07,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-19 07:47:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2023-11-19 07:47:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 07:47:07,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:07,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:07,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:07,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:07,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:07,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1251758570, now seen corresponding path program 1 times [2023-11-19 07:47:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997316196] [2023-11-19 07:47:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:07,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024920339] [2023-11-19 07:47:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:07,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:07,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:07,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:08,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:08,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997316196] [2023-11-19 07:47:08,023 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:08,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024920339] [2023-11-19 07:47:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024920339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:08,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750353638] [2023-11-19 07:47:08,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:08,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:08,027 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-19 07:47:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:08,478 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2023-11-19 07:47:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:08,478 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), 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 22 [2023-11-19 07:47:08,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:08,480 INFO L225 Difference]: With dead ends: 116 [2023-11-19 07:47:08,480 INFO L226 Difference]: Without dead ends: 113 [2023-11-19 07:47:08,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:08,482 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 121 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:08,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 41 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:47:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-19 07:47:08,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 100. [2023-11-19 07:47:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 93 states have internal predecessors, (100), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2023-11-19 07:47:08,496 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 22 [2023-11-19 07:47:08,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:08,496 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2023-11-19 07:47:08,497 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), 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) [2023-11-19 07:47:08,497 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2023-11-19 07:47:08,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:47:08,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:08,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 07:47:08,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:08,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:08,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,717 INFO L85 PathProgramCache]: Analyzing trace with hash -149809945, now seen corresponding path program 1 times [2023-11-19 07:47:08,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002170853] [2023-11-19 07:47:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:08,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:08,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465365457] [2023-11-19 07:47:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:08,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:08,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:08,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:08,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:08,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:08,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002170853] [2023-11-19 07:47:08,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:08,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465365457] [2023-11-19 07:47:08,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465365457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:08,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:08,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857199175] [2023-11-19 07:47:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:08,868 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-19 07:47:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:09,026 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2023-11-19 07:47:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:09,027 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), 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 23 [2023-11-19 07:47:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:09,028 INFO L225 Difference]: With dead ends: 113 [2023-11-19 07:47:09,028 INFO L226 Difference]: Without dead ends: 110 [2023-11-19 07:47:09,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:09,030 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 113 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:09,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 41 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-19 07:47:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 102. [2023-11-19 07:47:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.4852941176470589) internal successors, (101), 95 states have internal predecessors, (101), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2023-11-19 07:47:09,042 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 23 [2023-11-19 07:47:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:09,043 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2023-11-19 07:47:09,043 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), 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) [2023-11-19 07:47:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2023-11-19 07:47:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:47:09,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:09,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:09,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:09,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:09,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -349140936, now seen corresponding path program 1 times [2023-11-19 07:47:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:09,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019105510] [2023-11-19 07:47:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:09,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:09,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778737695] [2023-11-19 07:47:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:09,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:09,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:09,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:47:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:09,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:09,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:09,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019105510] [2023-11-19 07:47:09,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778737695] [2023-11-19 07:47:09,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778737695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:09,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:09,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:09,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878136207] [2023-11-19 07:47:09,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:09,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:09,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:09,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:09,419 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-19 07:47:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:09,533 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2023-11-19 07:47:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 24 [2023-11-19 07:47:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:09,535 INFO L225 Difference]: With dead ends: 110 [2023-11-19 07:47:09,535 INFO L226 Difference]: Without dead ends: 96 [2023-11-19 07:47:09,536 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 [2023-11-19 07:47:09,537 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:09,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:09,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-19 07:47:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2023-11-19 07:47:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.5) internal successors, (90), 87 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2023-11-19 07:47:09,547 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 24 [2023-11-19 07:47:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:09,548 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2023-11-19 07:47:09,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-19 07:47:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2023-11-19 07:47:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:47:09,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:09,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:09,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:09,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:47:09,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:09,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:09,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1369425996, now seen corresponding path program 1 times [2023-11-19 07:47:09,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:09,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097248724] [2023-11-19 07:47:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:09,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:09,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923942764] [2023-11-19 07:47:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:09,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:09,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:09,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:09,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:47:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:09,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:09,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:09,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:09,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097248724] [2023-11-19 07:47:09,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923942764] [2023-11-19 07:47:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923942764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:09,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:09,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011662756] [2023-11-19 07:47:09,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:09,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:09,906 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:09,923 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-11-19 07:47:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:09,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-19 07:47:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:09,932 INFO L225 Difference]: With dead ends: 94 [2023-11-19 07:47:09,932 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 07:47:09,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:09,936 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 44 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:09,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 81 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 07:47:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-19 07:47:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 86 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2023-11-19 07:47:09,961 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 32 [2023-11-19 07:47:09,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:09,962 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2023-11-19 07:47:09,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2023-11-19 07:47:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:47:09,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:09,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:09,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:10,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:10,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:10,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 497467159, now seen corresponding path program 1 times [2023-11-19 07:47:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668512838] [2023-11-19 07:47:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:10,197 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:10,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858066723] [2023-11-19 07:47:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:10,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:10,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:10,199 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:10,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:47:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:10,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:10,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:10,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:10,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:10,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668512838] [2023-11-19 07:47:10,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:10,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858066723] [2023-11-19 07:47:10,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858066723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:10,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:10,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:10,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001284644] [2023-11-19 07:47:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:10,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:10,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:10,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:10,282 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:10,299 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-11-19 07:47:10,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:10,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-19 07:47:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:10,300 INFO L225 Difference]: With dead ends: 94 [2023-11-19 07:47:10,300 INFO L226 Difference]: Without dead ends: 93 [2023-11-19 07:47:10,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:10,303 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:10,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-19 07:47:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-11-19 07:47:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.45) internal successors, (87), 86 states have internal predecessors, (87), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2023-11-19 07:47:10,314 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 33 [2023-11-19 07:47:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:10,314 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2023-11-19 07:47:10,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2023-11-19 07:47:10,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 07:47:10,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:10,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:10,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:10,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:47:10,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:10,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1722377953, now seen corresponding path program 1 times [2023-11-19 07:47:10,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80146624] [2023-11-19 07:47:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:10,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134727452] [2023-11-19 07:47:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:10,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:10,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:10,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:10,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:47:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:10,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:47:10,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:10,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:11,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:11,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80146624] [2023-11-19 07:47:11,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:11,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134727452] [2023-11-19 07:47:11,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134727452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:11,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:11,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:47:11,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688744629] [2023-11-19 07:47:11,122 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:11,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:11,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:11,123 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:11,414 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2023-11-19 07:47:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:11,415 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), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2023-11-19 07:47:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:11,416 INFO L225 Difference]: With dead ends: 93 [2023-11-19 07:47:11,416 INFO L226 Difference]: Without dead ends: 87 [2023-11-19 07:47:11,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:11,417 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 97 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:11,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 89 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-19 07:47:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-19 07:47:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.35) internal successors, (81), 80 states have internal predecessors, (81), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2023-11-19 07:47:11,431 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 41 [2023-11-19 07:47:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:11,432 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2023-11-19 07:47:11,432 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), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2023-11-19 07:47:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 07:47:11,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:11,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:11,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:11,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:11,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1854108942, now seen corresponding path program 1 times [2023-11-19 07:47:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389258088] [2023-11-19 07:47:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:11,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:11,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005516774] [2023-11-19 07:47:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:11,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:11,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:11,672 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:11,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:47:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:11,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:47:11,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:11,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389258088] [2023-11-19 07:47:12,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005516774] [2023-11-19 07:47:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005516774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:12,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:47:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415891241] [2023-11-19 07:47:12,119 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:12,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:12,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:12,121 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:12,390 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2023-11-19 07:47:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:12,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-11-19 07:47:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:12,392 INFO L225 Difference]: With dead ends: 135 [2023-11-19 07:47:12,392 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 07:47:12,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:12,393 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 130 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:12,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 71 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:12,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 07:47:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2023-11-19 07:47:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.353658536585366) internal successors, (111), 102 states have internal predecessors, (111), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:47:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2023-11-19 07:47:12,408 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 42 [2023-11-19 07:47:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:12,409 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2023-11-19 07:47:12,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2023-11-19 07:47:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:47:12,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:12,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:12,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:12,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:47:12,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:12,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1814953443, now seen corresponding path program 1 times [2023-11-19 07:47:12,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:12,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420260848] [2023-11-19 07:47:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:12,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:12,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:12,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741174553] [2023-11-19 07:47:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:12,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:12,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:12,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:12,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:47:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:47:12,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:12,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:14,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:14,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420260848] [2023-11-19 07:47:14,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:14,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741174553] [2023-11-19 07:47:14,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741174553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:14,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2023-11-19 07:47:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272068446] [2023-11-19 07:47:14,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:14,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:47:14,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:47:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:14,744 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-19 07:47:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:15,408 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2023-11-19 07:47:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:15,409 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2023-11-19 07:47:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:15,410 INFO L225 Difference]: With dead ends: 133 [2023-11-19 07:47:15,410 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 07:47:15,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:15,412 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 201 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:15,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 112 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 07:47:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2023-11-19 07:47:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.2976190476190477) internal successors, (109), 102 states have internal predecessors, (109), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:47:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 119 transitions. [2023-11-19 07:47:15,420 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 119 transitions. Word has length 45 [2023-11-19 07:47:15,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:15,420 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 119 transitions. [2023-11-19 07:47:15,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-19 07:47:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 119 transitions. [2023-11-19 07:47:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:47:15,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:15,421 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:47:15,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:15,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:15,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:15,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:15,642 INFO L85 PathProgramCache]: Analyzing trace with hash 413538373, now seen corresponding path program 1 times [2023-11-19 07:47:15,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:15,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993136900] [2023-11-19 07:47:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:15,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:15,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274893870] [2023-11-19 07:47:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:15,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:15,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:15,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:15,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:47:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:15,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:47:15,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:15,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993136900] [2023-11-19 07:47:16,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:16,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274893870] [2023-11-19 07:47:16,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274893870] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:16,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:16,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:47:16,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162676772] [2023-11-19 07:47:16,108 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:16,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:16,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:16,112 INFO L87 Difference]: Start difference. First operand 110 states and 119 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:16,320 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2023-11-19 07:47:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:16,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2023-11-19 07:47:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:16,322 INFO L225 Difference]: With dead ends: 110 [2023-11-19 07:47:16,322 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:47:16,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:16,323 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 79 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:16,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 89 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:47:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-19 07:47:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 84 states have (on average 1.25) internal successors, (105), 99 states have internal predecessors, (105), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:47:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2023-11-19 07:47:16,333 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 47 [2023-11-19 07:47:16,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:16,335 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2023-11-19 07:47:16,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2023-11-19 07:47:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 07:47:16,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:16,341 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:47:16,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:16,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:16,563 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:16,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:16,564 INFO L85 PathProgramCache]: Analyzing trace with hash -65212264, now seen corresponding path program 1 times [2023-11-19 07:47:16,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:16,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423351299] [2023-11-19 07:47:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:16,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:16,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534196065] [2023-11-19 07:47:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:16,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:16,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:16,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:47:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:16,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:47:16,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:47:17,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:19,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:19,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423351299] [2023-11-19 07:47:19,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:19,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534196065] [2023-11-19 07:47:19,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534196065] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:19,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:19,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 07:47:19,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336320562] [2023-11-19 07:47:19,344 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:19,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:47:19,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:47:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:19,345 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:20,611 INFO L93 Difference]: Finished difference Result 123 states and 126 transitions. [2023-11-19 07:47:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:47:20,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-11-19 07:47:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:20,613 INFO L225 Difference]: With dead ends: 123 [2023-11-19 07:47:20,614 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 07:47:20,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:47:20,615 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 122 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:20,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 120 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:47:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 07:47:20,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-11-19 07:47:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 103 states have internal predecessors, (108), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:47:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2023-11-19 07:47:20,624 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 48 [2023-11-19 07:47:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:20,625 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2023-11-19 07:47:20,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 07:47:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2023-11-19 07:47:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 07:47:20,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:20,626 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:47:20,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:20,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:20,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:20,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2021580121, now seen corresponding path program 1 times [2023-11-19 07:47:20,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:20,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259143564] [2023-11-19 07:47:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:20,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:20,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:20,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851737306] [2023-11-19 07:47:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:20,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:20,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:20,862 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:20,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:47:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:20,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:47:20,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:47:21,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:21,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259143564] [2023-11-19 07:47:21,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851737306] [2023-11-19 07:47:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851737306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:21,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-19 07:47:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664678083] [2023-11-19 07:47:21,303 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:21,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:21,305 INFO L87 Difference]: Start difference. First operand 111 states and 118 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:21,627 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2023-11-19 07:47:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2023-11-19 07:47:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:21,629 INFO L225 Difference]: With dead ends: 118 [2023-11-19 07:47:21,629 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 07:47:21,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:21,630 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:21,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 107 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:21,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 07:47:21,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2023-11-19 07:47:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.2125) internal successors, (97), 95 states have internal predecessors, (97), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:47:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2023-11-19 07:47:21,642 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 49 [2023-11-19 07:47:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:21,643 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2023-11-19 07:47:21,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:47:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2023-11-19 07:47:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:47:21,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:21,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:21,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:47:21,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:21,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:21,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1966829960, now seen corresponding path program 1 times [2023-11-19 07:47:21,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:21,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168325786] [2023-11-19 07:47:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:21,888 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:21,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408509984] [2023-11-19 07:47:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:21,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:21,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:21,892 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:21,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:47:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:21,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:21,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:47:22,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:47:22,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:22,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168325786] [2023-11-19 07:47:22,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:22,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408509984] [2023-11-19 07:47:22,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408509984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:22,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:22,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-19 07:47:22,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878725931] [2023-11-19 07:47:22,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:22,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:22,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:22,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:22,099 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 states have internal predecessors, (79), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:47:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:22,150 INFO L93 Difference]: Finished difference Result 187 states and 194 transitions. [2023-11-19 07:47:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 states have internal predecessors, (79), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 58 [2023-11-19 07:47:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:22,153 INFO L225 Difference]: With dead ends: 187 [2023-11-19 07:47:22,153 INFO L226 Difference]: Without dead ends: 186 [2023-11-19 07:47:22,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:22,157 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 75 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:22,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 225 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-19 07:47:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 139. [2023-11-19 07:47:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 129 states have internal predecessors, (147), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2023-11-19 07:47:22,173 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 58 [2023-11-19 07:47:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:22,173 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2023-11-19 07:47:22,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 states have internal predecessors, (79), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 07:47:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2023-11-19 07:47:22,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:47:22,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:22,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:22,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:22,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:22,396 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:22,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1702561697, now seen corresponding path program 2 times [2023-11-19 07:47:22,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:22,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104836059] [2023-11-19 07:47:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:22,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:22,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:22,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802778935] [2023-11-19 07:47:22,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:22,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:22,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:22,425 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:22,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:47:22,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:22,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:22,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:47:22,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:47:22,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104836059] [2023-11-19 07:47:22,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802778935] [2023-11-19 07:47:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802778935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:22,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:47:22,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569485906] [2023-11-19 07:47:22,998 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:23,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:23,001 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:23,347 INFO L93 Difference]: Finished difference Result 163 states and 176 transitions. [2023-11-19 07:47:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:23,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 67 [2023-11-19 07:47:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:23,349 INFO L225 Difference]: With dead ends: 163 [2023-11-19 07:47:23,349 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 07:47:23,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:47:23,350 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:23,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 104 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 07:47:23,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 143. [2023-11-19 07:47:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 118 states have (on average 1.2457627118644068) internal successors, (147), 133 states have internal predecessors, (147), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2023-11-19 07:47:23,369 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 67 [2023-11-19 07:47:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:23,370 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2023-11-19 07:47:23,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2023-11-19 07:47:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 07:47:23,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:23,371 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:23,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:23,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:23,577 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:23,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1684780059, now seen corresponding path program 1 times [2023-11-19 07:47:23,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:23,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110036563] [2023-11-19 07:47:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:23,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:23,600 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:23,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660648108] [2023-11-19 07:47:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:23,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:23,602 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:23,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:47:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:23,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:47:23,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:24,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:26,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110036563] [2023-11-19 07:47:26,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660648108] [2023-11-19 07:47:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660648108] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:26,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:26,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:47:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710301677] [2023-11-19 07:47:26,784 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:26,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:47:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:26,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:47:26,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:26,786 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:28,081 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2023-11-19 07:47:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:47:28,082 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), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 71 [2023-11-19 07:47:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:28,084 INFO L225 Difference]: With dead ends: 145 [2023-11-19 07:47:28,084 INFO L226 Difference]: Without dead ends: 139 [2023-11-19 07:47:28,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:47:28,085 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 89 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:28,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 199 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:47:28,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-19 07:47:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2023-11-19 07:47:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 123 states have internal predecessors, (135), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2023-11-19 07:47:28,098 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 71 [2023-11-19 07:47:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:28,099 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2023-11-19 07:47:28,099 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), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2023-11-19 07:47:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 07:47:28,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:28,100 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:28,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:28,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:28,323 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:28,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:28,323 INFO L85 PathProgramCache]: Analyzing trace with hash 129035783, now seen corresponding path program 2 times [2023-11-19 07:47:28,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9450075] [2023-11-19 07:47:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:28,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171837481] [2023-11-19 07:47:28,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:28,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:28,342 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:28,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:47:28,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:28,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:28,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:47:28,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:47:28,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:30,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:30,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9450075] [2023-11-19 07:47:30,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171837481] [2023-11-19 07:47:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171837481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:30,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 07:47:30,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913505486] [2023-11-19 07:47:30,136 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:30,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:47:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:47:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:30,138 INFO L87 Difference]: Start difference. First operand 133 states and 149 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:31,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:31,103 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2023-11-19 07:47:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:31,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2023-11-19 07:47:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:31,108 INFO L225 Difference]: With dead ends: 150 [2023-11-19 07:47:31,108 INFO L226 Difference]: Without dead ends: 147 [2023-11-19 07:47:31,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:31,109 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 101 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:31,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 192 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:47:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-19 07:47:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2023-11-19 07:47:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 122 states have (on average 1.1557377049180328) internal successors, (141), 131 states have internal predecessors, (141), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2023-11-19 07:47:31,123 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 73 [2023-11-19 07:47:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:31,123 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2023-11-19 07:47:31,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 11 states have internal predecessors, (65), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:47:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2023-11-19 07:47:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 07:47:31,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:31,125 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:31,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:31,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:31,340 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:31,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -294857960, now seen corresponding path program 2 times [2023-11-19 07:47:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566136464] [2023-11-19 07:47:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:31,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:31,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931904764] [2023-11-19 07:47:31,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:31,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:31,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:31,374 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:31,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:47:31,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:31,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:31,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:47:31,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:47:31,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 07:47:31,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:31,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566136464] [2023-11-19 07:47:31,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:31,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931904764] [2023-11-19 07:47:31,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931904764] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:31,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:31,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-19 07:47:31,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339003070] [2023-11-19 07:47:31,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:31,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:31,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:31,898 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:47:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:33,442 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2023-11-19 07:47:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-11-19 07:47:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:33,444 INFO L225 Difference]: With dead ends: 141 [2023-11-19 07:47:33,444 INFO L226 Difference]: Without dead ends: 139 [2023-11-19 07:47:33,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:33,445 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:33,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 80 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 07:47:33,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-19 07:47:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-19 07:47:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 122 states have (on average 1.1229508196721312) internal successors, (137), 129 states have internal predecessors, (137), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2023-11-19 07:47:33,459 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 74 [2023-11-19 07:47:33,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:33,460 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2023-11-19 07:47:33,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:47:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2023-11-19 07:47:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 07:47:33,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:33,461 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:33,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:33,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:33,676 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:33,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:33,676 INFO L85 PathProgramCache]: Analyzing trace with hash -550662103, now seen corresponding path program 1 times [2023-11-19 07:47:33,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:33,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000916886] [2023-11-19 07:47:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:33,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:33,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768608465] [2023-11-19 07:47:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:33,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:33,688 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:33,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:47:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:33,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:47:33,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:47:39,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 07:47:39,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000916886] [2023-11-19 07:47:39,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:39,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768608465] [2023-11-19 07:47:39,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768608465] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:39,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:39,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-19 07:47:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519445754] [2023-11-19 07:47:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:39,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:39,543 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:47:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:40,600 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2023-11-19 07:47:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2023-11-19 07:47:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:40,602 INFO L225 Difference]: With dead ends: 139 [2023-11-19 07:47:40,602 INFO L226 Difference]: Without dead ends: 127 [2023-11-19 07:47:40,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:47:40,604 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:40,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 80 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:47:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-19 07:47:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-19 07:47:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.0892857142857142) internal successors, (122), 117 states have internal predecessors, (122), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2023-11-19 07:47:40,619 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 75 [2023-11-19 07:47:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:40,619 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2023-11-19 07:47:40,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:47:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2023-11-19 07:47:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 07:47:40,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:40,621 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:40,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:40,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:40,834 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:40,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -217063982, now seen corresponding path program 3 times [2023-11-19 07:47:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:40,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261131660] [2023-11-19 07:47:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:40,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:40,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881790338] [2023-11-19 07:47:40,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:47:40,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:40,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:40,848 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:40,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:47:41,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 07:47:41,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:41,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:47:41,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:47:41,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:41,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:41,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261131660] [2023-11-19 07:47:41,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:41,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881790338] [2023-11-19 07:47:41,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881790338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:41,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:41,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 07:47:41,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515803745] [2023-11-19 07:47:41,949 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:41,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:47:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:41,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:47:41,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:41,951 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand has 11 states, 10 states have (on average 7.9) internal successors, (79), 11 states have internal predecessors, (79), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:47:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:42,368 INFO L93 Difference]: Finished difference Result 143 states and 148 transitions. [2023-11-19 07:47:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:47:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 11 states have internal predecessors, (79), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 92 [2023-11-19 07:47:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:42,370 INFO L225 Difference]: With dead ends: 143 [2023-11-19 07:47:42,370 INFO L226 Difference]: Without dead ends: 141 [2023-11-19 07:47:42,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:47:42,372 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 89 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:42,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 165 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:47:42,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-19 07:47:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 127. [2023-11-19 07:47:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 112 states have (on average 1.0714285714285714) internal successors, (120), 117 states have internal predecessors, (120), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:42,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 134 transitions. [2023-11-19 07:47:42,389 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 134 transitions. Word has length 92 [2023-11-19 07:47:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:42,389 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 134 transitions. [2023-11-19 07:47:42,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.9) internal successors, (79), 11 states have internal predecessors, (79), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:47:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 134 transitions. [2023-11-19 07:47:42,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:47:42,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:42,391 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:42,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:42,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-19 07:47:42,599 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:42,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1411474568, now seen corresponding path program 3 times [2023-11-19 07:47:42,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:42,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232864802] [2023-11-19 07:47:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:42,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:42,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654648376] [2023-11-19 07:47:42,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:47:42,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:42,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:42,612 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:42,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:47:42,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:47:42,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:42,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:47:42,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 07:47:45,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:46,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232864802] [2023-11-19 07:47:46,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654648376] [2023-11-19 07:47:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654648376] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:46,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:46,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:47:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776718406] [2023-11-19 07:47:46,646 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:46,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:47:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:47:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:46,648 INFO L87 Difference]: Start difference. First operand 127 states and 134 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 12 states have internal predecessors, (64), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:47:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:56,204 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2023-11-19 07:47:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:47:56,204 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), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 98 [2023-11-19 07:47:56,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:56,205 INFO L225 Difference]: With dead ends: 127 [2023-11-19 07:47:56,206 INFO L226 Difference]: Without dead ends: 116 [2023-11-19 07:47:56,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:47:56,207 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 96 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:56,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 123 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-19 07:47:56,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-19 07:47:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-19 07:47:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 104 states have (on average 1.0288461538461537) internal successors, (107), 106 states have internal predecessors, (107), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2023-11-19 07:47:56,226 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 98 [2023-11-19 07:47:56,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:56,227 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2023-11-19 07:47:56,227 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), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:47:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2023-11-19 07:47:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-19 07:47:56,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:56,228 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:56,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 07:47:56,444 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:56,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,444 INFO L85 PathProgramCache]: Analyzing trace with hash 437301441, now seen corresponding path program 4 times [2023-11-19 07:47:56,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422872343] [2023-11-19 07:47:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655994323] [2023-11-19 07:47:56,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:47:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:56,471 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:56,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:47:56,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:47:56,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:56,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:47:56,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 07:47:57,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:57,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422872343] [2023-11-19 07:47:57,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:57,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655994323] [2023-11-19 07:47:57,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655994323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:57,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:57,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 07:47:57,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111903536] [2023-11-19 07:47:57,866 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:57,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:47:57,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:57,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:47:57,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:57,868 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 10 states have internal predecessors, (96), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 07:47:58,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:58,898 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2023-11-19 07:47:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:47:58,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 10 states have internal predecessors, (96), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 117 [2023-11-19 07:47:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:58,903 INFO L225 Difference]: With dead ends: 144 [2023-11-19 07:47:58,903 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 07:47:58,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:47:58,904 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:58,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 98 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:47:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 07:47:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2023-11-19 07:47:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 115 states have (on average 1.0260869565217392) internal successors, (118), 117 states have internal predecessors, (118), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2023-11-19 07:47:58,928 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 117 [2023-11-19 07:47:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:58,928 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2023-11-19 07:47:58,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 10 states have internal predecessors, (96), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 07:47:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2023-11-19 07:47:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:47:58,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:58,931 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:58,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 07:47:59,137 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:59,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 473962839, now seen corresponding path program 2 times [2023-11-19 07:47:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820152691] [2023-11-19 07:47:59,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:59,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:59,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85148059] [2023-11-19 07:47:59,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:59,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:59,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:59,149 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:59,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:47:59,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:59,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:59,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:59,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-19 07:47:59,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-19 07:47:59,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:59,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820152691] [2023-11-19 07:47:59,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:59,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85148059] [2023-11-19 07:47:59,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85148059] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:59,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:59,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-19 07:47:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459738228] [2023-11-19 07:47:59,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:59,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:59,487 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:47:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:59,527 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2023-11-19 07:47:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:59,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 133 [2023-11-19 07:47:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:59,529 INFO L225 Difference]: With dead ends: 127 [2023-11-19 07:47:59,529 INFO L226 Difference]: Without dead ends: 126 [2023-11-19 07:47:59,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:59,530 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 45 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:59,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 78 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-19 07:47:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-11-19 07:47:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 115 states have (on average 1.017391304347826) internal successors, (117), 116 states have internal predecessors, (117), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:59,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2023-11-19 07:47:59,569 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 133 [2023-11-19 07:47:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:59,570 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2023-11-19 07:47:59,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 07:47:59,570 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2023-11-19 07:47:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-19 07:47:59,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:59,572 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:59,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:59,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:47:59,784 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:47:59,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -752568142, now seen corresponding path program 5 times [2023-11-19 07:47:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:59,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022763215] [2023-11-19 07:47:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:59,802 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380036814] [2023-11-19 07:47:59,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:47:59,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:59,804 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:59,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c2f8f99-24a5-4dac-96b5-4ecc8fd5d97f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:47:59,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-19 07:47:59,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:59,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:47:59,902 INFO L285 TraceCheckSpWp]: Computing forward predicates...