./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/rev-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 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_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/rev-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx --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 fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:10:52,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:10:52,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:10:52,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:10:52,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:10:52,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:10:52,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:10:52,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:10:52,845 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:10:52,846 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:10:52,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:10:52,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:10:52,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:10:52,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:10:52,849 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:10:52,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:10:52,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:10:52,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:10:52,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:10:52,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:10:52,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:10:52,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:10:52,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:10:52,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:10:52,856 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:10:52,856 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:10:52,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:10:52,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:10:52,858 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:10:52,859 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:10:52,859 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:10:52,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:10:52,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:10:52,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:52,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:10:52,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:10:52,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:10:52,862 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:10:52,862 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:10:52,862 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:10:52,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:10:52,863 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:10:52,864 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:10:52,864 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:10:52,864 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_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe3cf414f0e241a9a4e73e59647cf6619ea50b905df4a1c2a404b3413992b780 [2023-11-21 22:10:53,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:10:53,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:10:53,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:10:53,246 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:10:53,247 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:10:53,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/array-multidimensional/rev-3-u.c [2023-11-21 22:10:56,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:10:56,630 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:10:56,631 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/sv-benchmarks/c/array-multidimensional/rev-3-u.c [2023-11-21 22:10:56,642 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/data/e1066aa84/c8109507128743be88979848d72062cb/FLAG91bccc90c [2023-11-21 22:10:56,713 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/data/e1066aa84/c8109507128743be88979848d72062cb [2023-11-21 22:10:56,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:10:56,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:10:56,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:56,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:10:56,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:10:56,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:56,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddce78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56, skipping insertion in model container [2023-11-21 22:10:56,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:56,766 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:10:56,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:56,948 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:10:56,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:56,988 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:10:56,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56 WrapperNode [2023-11-21 22:10:56,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:56,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:56,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:10:56,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:10:56,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,045 INFO L138 Inliner]: procedures = 14, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 149 [2023-11-21 22:10:57,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:57,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:10:57,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:10:57,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:10:57,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,061 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,073 INFO L187 HeapSplitter]: Split 7 memory accesses to 3 slices as follows [2, 3, 2] [2023-11-21 22:10:57,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:10:57,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:10:57,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:10:57,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:10:57,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (1/1) ... [2023-11-21 22:10:57,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:57,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:57,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:10:57,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:10:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:10:57,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:10:57,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:10:57,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:10:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:10:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:10:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:10:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:10:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:10:57,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:10:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:10:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:10:57,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:10:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:10:57,251 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:10:57,254 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:10:57,606 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:10:57,708 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:10:57,709 INFO L308 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-21 22:10:57,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:57 BoogieIcfgContainer [2023-11-21 22:10:57,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:10:57,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:10:57,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:10:57,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:10:57,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:10:56" (1/3) ... [2023-11-21 22:10:57,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7956cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:57, skipping insertion in model container [2023-11-21 22:10:57,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:56" (2/3) ... [2023-11-21 22:10:57,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7956cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:57, skipping insertion in model container [2023-11-21 22:10:57,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:57" (3/3) ... [2023-11-21 22:10:57,724 INFO L112 eAbstractionObserver]: Analyzing ICFG rev-3-u.c [2023-11-21 22:10:57,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:10:57,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-21 22:10:57,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:10:57,806 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;@72ca7cbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:10:57,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-21 22:10:57,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 94 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 22:10:57,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:57,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 22:10:57,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:10:57,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash 7405975, now seen corresponding path program 1 times [2023-11-21 22:10:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:57,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600895151] [2023-11-21 22:10:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:57,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:10:57,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146208792] [2023-11-21 22:10:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:57,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:57,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:57,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:57,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:10:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:58,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:10:58,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:10:58,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:10:58,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:58,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600895151] [2023-11-21 22:10:58,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:10:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146208792] [2023-11-21 22:10:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146208792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:10:58,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:10:58,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:10:58,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766604229] [2023-11-21 22:10:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:10:58,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:10:58,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:10:58,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:58,127 INFO L87 Difference]: Start difference. First operand has 95 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 94 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:58,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:58,247 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2023-11-21 22:10:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:10:58,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-21 22:10:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:58,258 INFO L225 Difference]: With dead ends: 95 [2023-11-21 22:10:58,259 INFO L226 Difference]: Without dead ends: 91 [2023-11-21 22:10:58,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:58,265 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:58,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 58 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:10:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-21 22:10:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-21 22:10:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 90 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2023-11-21 22:10:58,349 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 4 [2023-11-21 22:10:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:58,349 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2023-11-21 22:10:58,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2023-11-21 22:10:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:10:58,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:58,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:10:58,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:10:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 22:10:58,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:10:58,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash 229387296, now seen corresponding path program 1 times [2023-11-21 22:10:58,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:58,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315792035] [2023-11-21 22:10:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:58,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:10:58,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556764303] [2023-11-21 22:10:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:58,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:58,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:58,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:58,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:10:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:58,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:10:58,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:10:58,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:10:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:58,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315792035] [2023-11-21 22:10:58,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:10:58,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556764303] [2023-11-21 22:10:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556764303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:10:58,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:10:58,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:10:58,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725991395] [2023-11-21 22:10:58,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:10:58,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:10:58,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:10:58,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:58,673 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:58,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:58,784 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2023-11-21 22:10:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:10:58,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 22:10:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:58,786 INFO L225 Difference]: With dead ends: 91 [2023-11-21 22:10:58,787 INFO L226 Difference]: Without dead ends: 88 [2023-11-21 22:10:58,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:58,789 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 85 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:58,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 55 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:10:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-21 22:10:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-11-21 22:10:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 87 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:58,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-21 22:10:58,802 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 5 [2023-11-21 22:10:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:58,802 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-21 22:10:58,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-21 22:10:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:10:58,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:58,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:10:58,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:10:59,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-21 22:10:59,012 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:10:59,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash 229381058, now seen corresponding path program 1 times [2023-11-21 22:10:59,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:59,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755320629] [2023-11-21 22:10:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:59,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:59,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:10:59,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772472436] [2023-11-21 22:10:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:59,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:59,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:59,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:59,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:10:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:59,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:10:59,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:10:59,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:10:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755320629] [2023-11-21 22:10:59,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:10:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772472436] [2023-11-21 22:10:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772472436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:10:59,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:10:59,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:10:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292129433] [2023-11-21 22:10:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:10:59,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:10:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:59,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:10:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:59,127 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:59,214 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2023-11-21 22:10:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:10:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 22:10:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:59,220 INFO L225 Difference]: With dead ends: 88 [2023-11-21 22:10:59,221 INFO L226 Difference]: Without dead ends: 85 [2023-11-21 22:10:59,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:59,225 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:59,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:10:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-21 22:10:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-21 22:10:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.7884615384615385) internal successors, (93), 84 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2023-11-21 22:10:59,251 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 5 [2023-11-21 22:10:59,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:59,251 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2023-11-21 22:10:59,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:59,252 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2023-11-21 22:10:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:10:59,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:59,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:10:59,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:10:59,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-21 22:10:59,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:10:59,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash 229585302, now seen corresponding path program 1 times [2023-11-21 22:10:59,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:59,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238546643] [2023-11-21 22:10:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:59,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:59,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:10:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393978810] [2023-11-21 22:10:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:59,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:59,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:59,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:59,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:10:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:59,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:10:59,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:10:59,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:10:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238546643] [2023-11-21 22:10:59,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:10:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393978810] [2023-11-21 22:10:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393978810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:10:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:10:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:10:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441715901] [2023-11-21 22:10:59,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:10:59,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:10:59,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:10:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:59,557 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:59,688 INFO L93 Difference]: Finished difference Result 169 states and 185 transitions. [2023-11-21 22:10:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:10:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-21 22:10:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:59,691 INFO L225 Difference]: With dead ends: 169 [2023-11-21 22:10:59,691 INFO L226 Difference]: Without dead ends: 166 [2023-11-21 22:10:59,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:10:59,698 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 81 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:59,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 107 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:10:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-21 22:10:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 136. [2023-11-21 22:10:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 103 states have (on average 1.766990291262136) internal successors, (182), 135 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2023-11-21 22:10:59,736 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 5 [2023-11-21 22:10:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:59,736 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2023-11-21 22:10:59,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:10:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2023-11-21 22:10:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:10:59,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:59,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:10:59,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:10:59,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:59,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:10:59,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1280256653, now seen corresponding path program 1 times [2023-11-21 22:10:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:59,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124164803] [2023-11-21 22:10:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:59,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:10:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811138882] [2023-11-21 22:10:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:59,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:59,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:59,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:11:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:00,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:11:00,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:00,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124164803] [2023-11-21 22:11:00,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811138882] [2023-11-21 22:11:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811138882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:00,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:00,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:11:00,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177594254] [2023-11-21 22:11:00,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:00,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:11:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:11:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:11:00,030 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:00,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:00,163 INFO L93 Difference]: Finished difference Result 246 states and 334 transitions. [2023-11-21 22:11:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:11:00,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 22:11:00,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:00,165 INFO L225 Difference]: With dead ends: 246 [2023-11-21 22:11:00,165 INFO L226 Difference]: Without dead ends: 132 [2023-11-21 22:11:00,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:11:00,167 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 79 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:00,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 20 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-21 22:11:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-21 22:11:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 103 states have (on average 1.6796116504854368) internal successors, (173), 131 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 173 transitions. [2023-11-21 22:11:00,198 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 173 transitions. Word has length 6 [2023-11-21 22:11:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:00,198 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 173 transitions. [2023-11-21 22:11:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:00,199 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 173 transitions. [2023-11-21 22:11:00,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:11:00,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:00,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:11:00,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:00,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:00,415 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:00,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:00,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1478928346, now seen corresponding path program 1 times [2023-11-21 22:11:00,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:00,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980847156] [2023-11-21 22:11:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:00,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218970337] [2023-11-21 22:11:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:00,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:00,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:00,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:11:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:00,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:11:00,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:00,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:00,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980847156] [2023-11-21 22:11:00,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218970337] [2023-11-21 22:11:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218970337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:00,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:00,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:11:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537345242] [2023-11-21 22:11:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:00,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:11:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:11:00,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:11:00,502 INFO L87 Difference]: Start difference. First operand 132 states and 173 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:00,613 INFO L93 Difference]: Finished difference Result 260 states and 341 transitions. [2023-11-21 22:11:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:11:00,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 22:11:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:00,615 INFO L225 Difference]: With dead ends: 260 [2023-11-21 22:11:00,615 INFO L226 Difference]: Without dead ends: 257 [2023-11-21 22:11:00,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:11:00,617 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 74 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:00,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 96 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-21 22:11:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 216. [2023-11-21 22:11:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 187 states have (on average 1.6844919786096257) internal successors, (315), 215 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 315 transitions. [2023-11-21 22:11:00,634 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 315 transitions. Word has length 6 [2023-11-21 22:11:00,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:00,634 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 315 transitions. [2023-11-21 22:11:00,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 315 transitions. [2023-11-21 22:11:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:11:00,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:00,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:11:00,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:00,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:00,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:00,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1479121731, now seen corresponding path program 1 times [2023-11-21 22:11:00,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:00,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984942489] [2023-11-21 22:11:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:00,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:00,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968352907] [2023-11-21 22:11:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:00,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:00,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:00,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:11:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:00,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:11:00,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:00,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:00,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:00,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984942489] [2023-11-21 22:11:00,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:00,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968352907] [2023-11-21 22:11:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968352907] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:00,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:00,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:11:00,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848621815] [2023-11-21 22:11:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:00,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:11:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:11:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:11:00,932 INFO L87 Difference]: Start difference. First operand 216 states and 315 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:01,060 INFO L93 Difference]: Finished difference Result 422 states and 613 transitions. [2023-11-21 22:11:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:11:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 22:11:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:01,065 INFO L225 Difference]: With dead ends: 422 [2023-11-21 22:11:01,065 INFO L226 Difference]: Without dead ends: 419 [2023-11-21 22:11:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:11:01,067 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 72 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:01,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 101 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-21 22:11:01,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 348. [2023-11-21 22:11:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 319 states have (on average 1.6896551724137931) internal successors, (539), 347 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:01,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 539 transitions. [2023-11-21 22:11:01,097 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 539 transitions. Word has length 6 [2023-11-21 22:11:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:01,097 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 539 transitions. [2023-11-21 22:11:01,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 539 transitions. [2023-11-21 22:11:01,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:11:01,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:01,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-21 22:11:01,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:01,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:01,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:01,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1849027392, now seen corresponding path program 1 times [2023-11-21 22:11:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:01,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383556933] [2023-11-21 22:11:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:01,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:01,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134049214] [2023-11-21 22:11:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:01,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:01,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:01,327 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:01,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:11:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:01,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:01,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:01,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:01,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383556933] [2023-11-21 22:11:01,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134049214] [2023-11-21 22:11:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134049214] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:01,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:01,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-21 22:11:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314324] [2023-11-21 22:11:01,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:01,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:11:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:11:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:11:01,509 INFO L87 Difference]: Start difference. First operand 348 states and 539 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:01,818 INFO L93 Difference]: Finished difference Result 1031 states and 1495 transitions. [2023-11-21 22:11:01,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:11:01,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 22:11:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:01,826 INFO L225 Difference]: With dead ends: 1031 [2023-11-21 22:11:01,826 INFO L226 Difference]: Without dead ends: 1028 [2023-11-21 22:11:01,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:11:01,830 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 432 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:01,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 239 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:11:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-11-21 22:11:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 744. [2023-11-21 22:11:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 715 states have (on average 1.6937062937062937) internal successors, (1211), 743 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1211 transitions. [2023-11-21 22:11:01,884 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1211 transitions. Word has length 9 [2023-11-21 22:11:01,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:01,884 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1211 transitions. [2023-11-21 22:11:01,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:01,885 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1211 transitions. [2023-11-21 22:11:01,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:11:01,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:01,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-11-21 22:11:01,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:02,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:02,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:02,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1493629621, now seen corresponding path program 1 times [2023-11-21 22:11:02,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:02,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400710187] [2023-11-21 22:11:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:02,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:02,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488291100] [2023-11-21 22:11:02,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:02,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:02,118 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:02,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:11:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:02,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:02,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:11:02,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:02,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400710187] [2023-11-21 22:11:02,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:02,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488291100] [2023-11-21 22:11:02,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488291100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:02,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:02,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:11:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118303652] [2023-11-21 22:11:02,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:02,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:11:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:11:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:02,206 INFO L87 Difference]: Start difference. First operand 744 states and 1211 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:02,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:02,415 INFO L93 Difference]: Finished difference Result 1469 states and 2369 transitions. [2023-11-21 22:11:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:11:02,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 22:11:02,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:02,422 INFO L225 Difference]: With dead ends: 1469 [2023-11-21 22:11:02,422 INFO L226 Difference]: Without dead ends: 763 [2023-11-21 22:11:02,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:02,429 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 147 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:02,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 39 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:11:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2023-11-21 22:11:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 744. [2023-11-21 22:11:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 715 states have (on average 1.6293706293706294) internal successors, (1165), 743 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1165 transitions. [2023-11-21 22:11:02,472 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1165 transitions. Word has length 9 [2023-11-21 22:11:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:02,472 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1165 transitions. [2023-11-21 22:11:02,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1165 transitions. [2023-11-21 22:11:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:11:02,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:02,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2023-11-21 22:11:02,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:02,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:02,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:02,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -308320198, now seen corresponding path program 1 times [2023-11-21 22:11:02,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:02,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895906680] [2023-11-21 22:11:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:02,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:02,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:02,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250031330] [2023-11-21 22:11:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:02,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:02,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:02,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:11:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:02,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:02,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:11:02,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:02,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:02,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895906680] [2023-11-21 22:11:02,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:02,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250031330] [2023-11-21 22:11:02,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250031330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:02,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:02,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:11:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961974011] [2023-11-21 22:11:02,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:11:02,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:02,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:11:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:02,790 INFO L87 Difference]: Start difference. First operand 744 states and 1165 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:03,011 INFO L93 Difference]: Finished difference Result 1486 states and 2306 transitions. [2023-11-21 22:11:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:11:03,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-21 22:11:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:03,017 INFO L225 Difference]: With dead ends: 1486 [2023-11-21 22:11:03,017 INFO L226 Difference]: Without dead ends: 760 [2023-11-21 22:11:03,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:03,019 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 129 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:03,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 39 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:11:03,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-11-21 22:11:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 744. [2023-11-21 22:11:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 715 states have (on average 1.5902097902097903) internal successors, (1137), 743 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1137 transitions. [2023-11-21 22:11:03,061 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1137 transitions. Word has length 10 [2023-11-21 22:11:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:03,061 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 1137 transitions. [2023-11-21 22:11:03,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1137 transitions. [2023-11-21 22:11:03,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 22:11:03,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:03,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-21 22:11:03,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:03,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:03,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:03,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:03,284 INFO L85 PathProgramCache]: Analyzing trace with hash 947492402, now seen corresponding path program 1 times [2023-11-21 22:11:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:03,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454989152] [2023-11-21 22:11:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:03,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:03,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966541292] [2023-11-21 22:11:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:03,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:03,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:03,299 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:03,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:11:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:03,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:11:03,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 22:11:03,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 22:11:03,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:03,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454989152] [2023-11-21 22:11:03,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966541292] [2023-11-21 22:11:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966541292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:03,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:03,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-21 22:11:03,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596558338] [2023-11-21 22:11:03,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:11:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:11:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:11:03,468 INFO L87 Difference]: Start difference. First operand 744 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:03,870 INFO L93 Difference]: Finished difference Result 1510 states and 2251 transitions. [2023-11-21 22:11:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:11:03,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-21 22:11:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:03,876 INFO L225 Difference]: With dead ends: 1510 [2023-11-21 22:11:03,876 INFO L226 Difference]: Without dead ends: 784 [2023-11-21 22:11:03,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:11:03,879 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 545 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:03,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 54 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:11:03,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-11-21 22:11:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 740. [2023-11-21 22:11:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 715 states have (on average 1.4503496503496502) internal successors, (1037), 739 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1037 transitions. [2023-11-21 22:11:03,914 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1037 transitions. Word has length 16 [2023-11-21 22:11:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:03,914 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1037 transitions. [2023-11-21 22:11:03,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1037 transitions. [2023-11-21 22:11:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 22:11:03,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:03,918 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2023-11-21 22:11:03,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:04,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 22:11:04,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:04,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1814321411, now seen corresponding path program 2 times [2023-11-21 22:11:04,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976612373] [2023-11-21 22:11:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:04,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:04,152 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:04,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73845595] [2023-11-21 22:11:04,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:11:04,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:04,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:04,154 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:04,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-21 22:11:04,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:11:04,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:11:04,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:04,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 22:11:04,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 22:11:04,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:04,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976612373] [2023-11-21 22:11:04,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:04,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73845595] [2023-11-21 22:11:04,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73845595] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:04,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:04,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-21 22:11:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399556310] [2023-11-21 22:11:04,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:04,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:11:04,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:04,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:11:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:11:04,305 INFO L87 Difference]: Start difference. First operand 740 states and 1037 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:04,451 INFO L93 Difference]: Finished difference Result 740 states and 1037 transitions. [2023-11-21 22:11:04,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:11:04,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-21 22:11:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:04,456 INFO L225 Difference]: With dead ends: 740 [2023-11-21 22:11:04,456 INFO L226 Difference]: Without dead ends: 737 [2023-11-21 22:11:04,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:11:04,458 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 280 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:04,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 36 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-11-21 22:11:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 617. [2023-11-21 22:11:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 595 states have (on average 1.426890756302521) internal successors, (849), 616 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 849 transitions. [2023-11-21 22:11:04,514 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 849 transitions. Word has length 18 [2023-11-21 22:11:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:04,515 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 849 transitions. [2023-11-21 22:11:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 849 transitions. [2023-11-21 22:11:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 22:11:04,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:04,517 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:04,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:04,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:04,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:04,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 934934760, now seen corresponding path program 1 times [2023-11-21 22:11:04,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:04,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295690545] [2023-11-21 22:11:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:04,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:04,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298998542] [2023-11-21 22:11:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:04,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:04,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:04,757 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:04,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-21 22:11:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:04,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:11:04,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:04,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:05,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295690545] [2023-11-21 22:11:05,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298998542] [2023-11-21 22:11:05,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298998542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:05,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:05,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-21 22:11:05,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153060745] [2023-11-21 22:11:05,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:11:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:05,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:11:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:11:05,055 INFO L87 Difference]: Start difference. First operand 617 states and 849 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:05,889 INFO L93 Difference]: Finished difference Result 2138 states and 2881 transitions. [2023-11-21 22:11:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:11:05,890 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-21 22:11:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:05,899 INFO L225 Difference]: With dead ends: 2138 [2023-11-21 22:11:05,900 INFO L226 Difference]: Without dead ends: 1537 [2023-11-21 22:11:05,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:11:05,902 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1091 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:05,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 90 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:11:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2023-11-21 22:11:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1409. [2023-11-21 22:11:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1387 states have (on average 1.425378514780101) internal successors, (1977), 1408 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1977 transitions. [2023-11-21 22:11:05,975 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1977 transitions. Word has length 27 [2023-11-21 22:11:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:05,975 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 1977 transitions. [2023-11-21 22:11:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1977 transitions. [2023-11-21 22:11:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 22:11:05,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:05,977 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:06,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:06,197 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:06,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1614869896, now seen corresponding path program 2 times [2023-11-21 22:11:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:06,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264250955] [2023-11-21 22:11:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:06,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:06,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:06,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130519825] [2023-11-21 22:11:06,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:11:06,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:06,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:06,216 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:06,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-21 22:11:06,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:11:06,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:11:06,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:06,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-21 22:11:06,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:06,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:06,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264250955] [2023-11-21 22:11:06,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:06,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130519825] [2023-11-21 22:11:06,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130519825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:06,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:06,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:11:06,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074877409] [2023-11-21 22:11:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:06,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:11:06,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:06,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:11:06,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:06,372 INFO L87 Difference]: Start difference. First operand 1409 states and 1977 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:06,479 INFO L93 Difference]: Finished difference Result 1409 states and 1977 transitions. [2023-11-21 22:11:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:11:06,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-11-21 22:11:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:06,491 INFO L225 Difference]: With dead ends: 1409 [2023-11-21 22:11:06,491 INFO L226 Difference]: Without dead ends: 1405 [2023-11-21 22:11:06,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:06,492 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:06,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 15 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:06,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2023-11-21 22:11:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1405. [2023-11-21 22:11:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1387 states have (on average 1.3100216294160059) internal successors, (1817), 1404 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 1817 transitions. [2023-11-21 22:11:06,570 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 1817 transitions. Word has length 45 [2023-11-21 22:11:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:06,571 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 1817 transitions. [2023-11-21 22:11:06,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 1817 transitions. [2023-11-21 22:11:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 22:11:06,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:06,574 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:06,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:06,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-21 22:11:06,794 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:06,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash -999258612, now seen corresponding path program 1 times [2023-11-21 22:11:06,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:06,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514693134] [2023-11-21 22:11:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:06,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:06,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141847762] [2023-11-21 22:11:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:06,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:06,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:06,810 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:06,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-21 22:11:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:06,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:11:06,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:07,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:07,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:07,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514693134] [2023-11-21 22:11:07,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:07,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141847762] [2023-11-21 22:11:07,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141847762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:07,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:07,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-21 22:11:07,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286955368] [2023-11-21 22:11:07,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:07,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:11:07,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:07,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:11:07,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:11:07,434 INFO L87 Difference]: Start difference. First operand 1405 states and 1817 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:09,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:09,429 INFO L93 Difference]: Finished difference Result 4572 states and 5807 transitions. [2023-11-21 22:11:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 22:11:09,430 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-11-21 22:11:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:09,449 INFO L225 Difference]: With dead ends: 4572 [2023-11-21 22:11:09,449 INFO L226 Difference]: Without dead ends: 3201 [2023-11-21 22:11:09,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-11-21 22:11:09,478 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3630 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3630 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:09,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3630 Valid, 126 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 22:11:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2023-11-21 22:11:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2989. [2023-11-21 22:11:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2971 states have (on average 1.306294177044766) internal successors, (3881), 2988 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3881 transitions. [2023-11-21 22:11:09,628 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3881 transitions. Word has length 49 [2023-11-21 22:11:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:09,628 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 3881 transitions. [2023-11-21 22:11:09,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3881 transitions. [2023-11-21 22:11:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-21 22:11:09,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:09,629 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:09,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:09,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:11:09,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:09,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:09,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1891096756, now seen corresponding path program 2 times [2023-11-21 22:11:09,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:09,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628978622] [2023-11-21 22:11:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:09,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:09,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:09,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833823440] [2023-11-21 22:11:09,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:11:09,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:09,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:09,876 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:09,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-21 22:11:10,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:11:10,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:11:10,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:10,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2023-11-21 22:11:10,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:10,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628978622] [2023-11-21 22:11:10,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833823440] [2023-11-21 22:11:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833823440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:10,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:10,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:11:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717767562] [2023-11-21 22:11:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:10,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:11:10,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:10,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:11:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:10,153 INFO L87 Difference]: Start difference. First operand 2989 states and 3881 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:10,290 INFO L93 Difference]: Finished difference Result 2989 states and 3881 transitions. [2023-11-21 22:11:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:11:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-21 22:11:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:10,309 INFO L225 Difference]: With dead ends: 2989 [2023-11-21 22:11:10,309 INFO L226 Difference]: Without dead ends: 2985 [2023-11-21 22:11:10,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:10,311 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 111 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:10,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 15 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2023-11-21 22:11:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2985. [2023-11-21 22:11:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2971 states have (on average 1.1878155503197576) internal successors, (3529), 2984 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 3529 transitions. [2023-11-21 22:11:10,467 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 3529 transitions. Word has length 85 [2023-11-21 22:11:10,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:10,468 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 3529 transitions. [2023-11-21 22:11:10,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 3529 transitions. [2023-11-21 22:11:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:11:10,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:10,470 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:10,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:10,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:11:10,684 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:10,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:10,684 INFO L85 PathProgramCache]: Analyzing trace with hash -716900400, now seen corresponding path program 1 times [2023-11-21 22:11:10,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:10,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048647911] [2023-11-21 22:11:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:10,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:10,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270170137] [2023-11-21 22:11:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:10,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:10,707 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:10,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-21 22:11:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:10,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 22:11:10,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 2 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:11,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 2 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:12,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:12,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048647911] [2023-11-21 22:11:12,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:12,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270170137] [2023-11-21 22:11:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270170137] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:12,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:12,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-11-21 22:11:12,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064823668] [2023-11-21 22:11:12,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:12,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-21 22:11:12,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:12,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-21 22:11:12,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2023-11-21 22:11:12,270 INFO L87 Difference]: Start difference. First operand 2985 states and 3529 transitions. Second operand has 50 states, 50 states have (on average 3.18) internal successors, (159), 49 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:17,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:17,456 INFO L93 Difference]: Finished difference Result 9340 states and 11019 transitions. [2023-11-21 22:11:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-21 22:11:17,456 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.18) internal successors, (159), 49 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-21 22:11:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:17,494 INFO L225 Difference]: With dead ends: 9340 [2023-11-21 22:11:17,494 INFO L226 Difference]: Without dead ends: 6425 [2023-11-21 22:11:17,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2023-11-21 22:11:17,502 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5969 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5969 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:17,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5969 Valid, 162 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-21 22:11:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6425 states. [2023-11-21 22:11:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6425 to 6153. [2023-11-21 22:11:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 6139 states have (on average 1.184720638540479) internal successors, (7273), 6152 states have internal predecessors, (7273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 7273 transitions. [2023-11-21 22:11:17,768 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 7273 transitions. Word has length 89 [2023-11-21 22:11:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:17,769 INFO L495 AbstractCegarLoop]: Abstraction has 6153 states and 7273 transitions. [2023-11-21 22:11:17,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.18) internal successors, (159), 49 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 7273 transitions. [2023-11-21 22:11:17,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-21 22:11:17,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:17,776 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:17,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-21 22:11:17,977 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:17,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1179116976, now seen corresponding path program 2 times [2023-11-21 22:11:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764795611] [2023-11-21 22:11:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:18,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:18,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469762893] [2023-11-21 22:11:18,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:11:18,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:18,020 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:18,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-21 22:11:18,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:11:18,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:11:18,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:18,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3153 trivial. 0 not checked. [2023-11-21 22:11:18,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:11:18,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:18,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764795611] [2023-11-21 22:11:18,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:18,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469762893] [2023-11-21 22:11:18,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469762893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:18,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:18,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:11:18,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593711553] [2023-11-21 22:11:18,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:18,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:11:18,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:18,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:11:18,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:18,420 INFO L87 Difference]: Start difference. First operand 6153 states and 7273 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:18,585 INFO L93 Difference]: Finished difference Result 6153 states and 7273 transitions. [2023-11-21 22:11:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:11:18,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-11-21 22:11:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:18,616 INFO L225 Difference]: With dead ends: 6153 [2023-11-21 22:11:18,616 INFO L226 Difference]: Without dead ends: 6149 [2023-11-21 22:11:18,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:11:18,619 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:18,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 18 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2023-11-21 22:11:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 6149. [2023-11-21 22:11:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 6139 states have (on average 1.0648314057664114) internal successors, (6537), 6148 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 6537 transitions. [2023-11-21 22:11:18,887 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 6537 transitions. Word has length 161 [2023-11-21 22:11:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:18,887 INFO L495 AbstractCegarLoop]: Abstraction has 6149 states and 6537 transitions. [2023-11-21 22:11:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 6537 transitions. [2023-11-21 22:11:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-11-21 22:11:18,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:18,892 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 1, 1, 1, 1] [2023-11-21 22:11:18,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:19,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-21 22:11:19,113 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:19,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1335934214, now seen corresponding path program 2 times [2023-11-21 22:11:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:19,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002998020] [2023-11-21 22:11:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:19,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:19,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736098106] [2023-11-21 22:11:19,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:11:19,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:19,184 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:19,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-21 22:11:19,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:11:19,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:11:19,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:19,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12746 backedges. 0 proven. 6443 refuted. 0 times theorem prover too weak. 6303 trivial. 0 not checked. [2023-11-21 22:11:19,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12746 backedges. 0 proven. 6443 refuted. 0 times theorem prover too weak. 6303 trivial. 0 not checked. [2023-11-21 22:11:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:20,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002998020] [2023-11-21 22:11:20,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:20,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736098106] [2023-11-21 22:11:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736098106] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:20,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-21 22:11:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952398081] [2023-11-21 22:11:20,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:20,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:11:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:11:20,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:11:20,188 INFO L87 Difference]: Start difference. First operand 6149 states and 6537 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:20,437 INFO L93 Difference]: Finished difference Result 6149 states and 6537 transitions. [2023-11-21 22:11:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:11:20,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2023-11-21 22:11:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:20,466 INFO L225 Difference]: With dead ends: 6149 [2023-11-21 22:11:20,466 INFO L226 Difference]: Without dead ends: 6146 [2023-11-21 22:11:20,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:11:20,469 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 115 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:20,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 24 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6146 states. [2023-11-21 22:11:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6146 to 5856. [2023-11-21 22:11:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 5849 states have (on average 1.0666780646264318) internal successors, (6239), 5855 states have internal predecessors, (6239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 6239 transitions. [2023-11-21 22:11:20,662 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 6239 transitions. Word has length 286 [2023-11-21 22:11:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:20,663 INFO L495 AbstractCegarLoop]: Abstraction has 5856 states and 6239 transitions. [2023-11-21 22:11:20,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 6239 transitions. [2023-11-21 22:11:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-21 22:11:20,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:20,668 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-21 22:11:20,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:20,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:20,887 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:20,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash 285856909, now seen corresponding path program 1 times [2023-11-21 22:11:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:20,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219494217] [2023-11-21 22:11:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:20,948 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:20,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289453556] [2023-11-21 22:11:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:20,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:20,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:20,950 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:21,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-21 22:11:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:21,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-21 22:11:21,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:23,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 6445 proven. 3151 refuted. 0 times theorem prover too weak. 3158 trivial. 0 not checked. [2023-11-21 22:11:23,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12754 backedges. 6445 proven. 3151 refuted. 0 times theorem prover too weak. 3158 trivial. 0 not checked. [2023-11-21 22:11:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219494217] [2023-11-21 22:11:25,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289453556] [2023-11-21 22:11:25,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289453556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:25,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:25,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-11-21 22:11:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535450071] [2023-11-21 22:11:25,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:25,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-11-21 22:11:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-11-21 22:11:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4659, Invalid=4847, Unknown=0, NotChecked=0, Total=9506 [2023-11-21 22:11:25,723 INFO L87 Difference]: Start difference. First operand 5856 states and 6239 transitions. Second operand has 98 states, 98 states have (on average 3.020408163265306) internal successors, (296), 97 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:45,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:45,066 INFO L93 Difference]: Finished difference Result 18129 states and 19387 transitions. [2023-11-21 22:11:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-21 22:11:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.020408163265306) internal successors, (296), 97 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2023-11-21 22:11:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:45,086 INFO L225 Difference]: With dead ends: 18129 [2023-11-21 22:11:45,086 INFO L226 Difference]: Without dead ends: 12276 [2023-11-21 22:11:45,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=9265, Invalid=11615, Unknown=0, NotChecked=0, Total=20880 [2023-11-21 22:11:45,102 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16280 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 3520 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16280 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 4460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 3520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:45,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16280 Valid, 75 Invalid, 4460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [940 Valid, 3520 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-21 22:11:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2023-11-21 22:11:45,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 11904. [2023-11-21 22:11:45,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11904 states, 11897 states have (on average 1.0650584180885938) internal successors, (12671), 11903 states have internal predecessors, (12671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11904 states to 11904 states and 12671 transitions. [2023-11-21 22:11:45,507 INFO L78 Accepts]: Start accepts. Automaton has 11904 states and 12671 transitions. Word has length 293 [2023-11-21 22:11:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:45,507 INFO L495 AbstractCegarLoop]: Abstraction has 11904 states and 12671 transitions. [2023-11-21 22:11:45,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.020408163265306) internal successors, (296), 97 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 11904 states and 12671 transitions. [2023-11-21 22:11:45,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2023-11-21 22:11:45,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:45,522 INFO L195 NwaCegarLoop]: trace histogram [188, 188, 188, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2023-11-21 22:11:45,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:45,744 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:45,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:45,745 INFO L85 PathProgramCache]: Analyzing trace with hash 71809165, now seen corresponding path program 2 times [2023-11-21 22:11:45,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:45,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422909729] [2023-11-21 22:11:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:45,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11478878] [2023-11-21 22:11:45,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:11:45,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:45,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:45,868 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:45,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-21 22:11:46,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:11:46,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:11:46,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:11:46,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:11:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 53122 backedges. 0 proven. 26705 refuted. 0 times theorem prover too weak. 26417 trivial. 0 not checked. [2023-11-21 22:11:46,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:11:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 53122 backedges. 0 proven. 26705 refuted. 0 times theorem prover too weak. 26417 trivial. 0 not checked. [2023-11-21 22:11:47,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422909729] [2023-11-21 22:11:47,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:11:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11478878] [2023-11-21 22:11:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11478878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:11:47,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:11:47,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-21 22:11:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368811076] [2023-11-21 22:11:47,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:11:47,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:11:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:11:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:11:47,750 INFO L87 Difference]: Start difference. First operand 11904 states and 12671 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:11:48,028 INFO L93 Difference]: Finished difference Result 11904 states and 12671 transitions. [2023-11-21 22:11:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:11:48,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 581 [2023-11-21 22:11:48,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:11:48,050 INFO L225 Difference]: With dead ends: 11904 [2023-11-21 22:11:48,050 INFO L226 Difference]: Without dead ends: 11901 [2023-11-21 22:11:48,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1162 GetRequests, 1156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:11:48,055 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 153 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:11:48,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 12 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:11:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11901 states. [2023-11-21 22:11:48,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11901 to 5954. [2023-11-21 22:11:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5954 states, 5950 states have (on average 1.0648739495798318) internal successors, (6336), 5953 states have internal predecessors, (6336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5954 states to 5954 states and 6336 transitions. [2023-11-21 22:11:48,276 INFO L78 Accepts]: Start accepts. Automaton has 5954 states and 6336 transitions. Word has length 581 [2023-11-21 22:11:48,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:11:48,278 INFO L495 AbstractCegarLoop]: Abstraction has 5954 states and 6336 transitions. [2023-11-21 22:11:48,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5954 states and 6336 transitions. [2023-11-21 22:11:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2023-11-21 22:11:48,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:11:48,416 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:11:48,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-21 22:11:48,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-21 22:11:48,638 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-21 22:11:48,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1448683635, now seen corresponding path program 1 times [2023-11-21 22:11:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375784957] [2023-11-21 22:11:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:48,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:11:48,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235232] [2023-11-21 22:11:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:48,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:11:48,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:48,827 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:11:48,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d2dd75f-4748-405a-ba05-b88d51ea6c09/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process