./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU --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 49a20f83cf329df91226e628147ac8e7ab93deb8d5efcb58cae512b640c9b509 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:13:10,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:13:10,809 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:13:10,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:13:10,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:13:10,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:13:10,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:13:10,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:13:10,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:13:10,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:13:10,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:13:10,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:13:10,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:13:10,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:13:10,841 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:13:10,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:13:10,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:13:10,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:13:10,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:13:10,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:13:10,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:13:10,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:13:10,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:13:10,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:13:10,845 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:13:10,845 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:13:10,845 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:13:10,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:13:10,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:13:10,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:13:10,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:13:10,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:13:10,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:13:10,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:13:10,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:10,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:13:10,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:13:10,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:13:10,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:13:10,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:13:10,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:13:10,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:13:10,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:13:10,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:13:10,851 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_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 49a20f83cf329df91226e628147ac8e7ab93deb8d5efcb58cae512b640c9b509 [2024-10-31 22:13:11,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:13:11,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:13:11,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:13:11,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:13:11,161 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:13:11,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound20.c Unable to find full path for "g++" [2024-10-31 22:13:13,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:13:13,304 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-10-31 22:13:13,528 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:13:13,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound20.c [2024-10-31 22:13:13,539 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/data/efb66e91b/8e3b655ecdac4a73a58a5ad1826a2737/FLAGc8bf24ede [2024-10-31 22:13:13,561 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/data/efb66e91b/8e3b655ecdac4a73a58a5ad1826a2737 [2024-10-31 22:13:13,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:13:13,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:13:13,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:13,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:13:13,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:13:13,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455d02ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13, skipping insertion in model container [2024-10-31 22:13:13,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,611 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:13:13,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:13,862 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:13:13,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:13:13,917 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:13:13,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13 WrapperNode [2024-10-31 22:13:13,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:13:13,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:13,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:13:13,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:13:13,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,955 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2024-10-31 22:13:13,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:13:13,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:13:13,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:13:13,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:13:13,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,970 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,981 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:13:13,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:13,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:13:13,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:13:13,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:13:13,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:13:13,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (1/1) ... [2024-10-31 22:13:14,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:13:14,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:14,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:13:14,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:13:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:13:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:13:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:13:14,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:13:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-31 22:13:14,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-31 22:13:14,117 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:13:14,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:13:14,380 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-31 22:13:14,380 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:13:14,405 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:13:14,405 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:13:14,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:14 BoogieIcfgContainer [2024-10-31 22:13:14,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:13:14,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:13:14,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:13:14,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:13:14,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:13:13" (1/3) ... [2024-10-31 22:13:14,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6847c418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:14, skipping insertion in model container [2024-10-31 22:13:14,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:13:13" (2/3) ... [2024-10-31 22:13:14,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6847c418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:13:14, skipping insertion in model container [2024-10-31 22:13:14,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:13:14" (3/3) ... [2024-10-31 22:13:14,417 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound20.c [2024-10-31 22:13:14,436 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:13:14,436 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-31 22:13:14,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:13:14,504 INFO L333 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, 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;@8084bd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:13:14,504 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:13:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 23 states have (on average 1.565217391304348) internal successors, (36), 27 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:13:14,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:13:14,514 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:14,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:13:14,515 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:14,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash 889508776, now seen corresponding path program 1 times [2024-10-31 22:13:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146860639] [2024-10-31 22:13:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:14,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:14,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146860639] [2024-10-31 22:13:14,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146860639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:14,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:14,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:13:14,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841680545] [2024-10-31 22:13:14,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:14,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:13:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:14,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:13:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:13:14,731 INFO L87 Difference]: Start difference. First operand has 38 states, 23 states have (on average 1.565217391304348) internal successors, (36), 27 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:14,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:14,754 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions. [2024-10-31 22:13:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:13:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 22:13:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:14,771 INFO L225 Difference]: With dead ends: 72 [2024-10-31 22:13:14,771 INFO L226 Difference]: Without dead ends: 29 [2024-10-31 22:13:14,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:13:14,788 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:14,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:13:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-31 22:13:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-31 22:13:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:13:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-10-31 22:13:14,860 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 6 [2024-10-31 22:13:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:14,861 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-10-31 22:13:14,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-10-31 22:13:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:13:14,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:14,863 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:13:14,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:13:14,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:14,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash 889568358, now seen corresponding path program 1 times [2024-10-31 22:13:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201572279] [2024-10-31 22:13:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:15,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:15,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201572279] [2024-10-31 22:13:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201572279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:15,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:15,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:13:15,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344844577] [2024-10-31 22:13:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:15,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:15,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:15,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:15,020 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:15,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:15,120 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-10-31 22:13:15,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:13:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 22:13:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:15,122 INFO L225 Difference]: With dead ends: 34 [2024-10-31 22:13:15,122 INFO L226 Difference]: Without dead ends: 33 [2024-10-31 22:13:15,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:15,125 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 13 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:15,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 79 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-31 22:13:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2024-10-31 22:13:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:13:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2024-10-31 22:13:15,134 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 6 [2024-10-31 22:13:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:15,135 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-10-31 22:13:15,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2024-10-31 22:13:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:13:15,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:15,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:15,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:13:15,137 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:15,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1806815370, now seen corresponding path program 1 times [2024-10-31 22:13:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545991738] [2024-10-31 22:13:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:15,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:15,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545991738] [2024-10-31 22:13:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545991738] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:13:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40868040] [2024-10-31 22:13:15,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:15,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:13:15,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:15,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:13:15,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:13:15,252 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-31 22:13:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:15,349 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2024-10-31 22:13:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:13:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-10-31 22:13:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:15,351 INFO L225 Difference]: With dead ends: 51 [2024-10-31 22:13:15,352 INFO L226 Difference]: Without dead ends: 32 [2024-10-31 22:13:15,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:13:15,354 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:15,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 88 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-31 22:13:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-31 22:13:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:13:15,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2024-10-31 22:13:15,365 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 7 [2024-10-31 22:13:15,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:15,366 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-10-31 22:13:15,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-31 22:13:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2024-10-31 22:13:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:13:15,367 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:15,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:15,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:13:15,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:15,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1510249073, now seen corresponding path program 1 times [2024-10-31 22:13:15,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:15,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356863233] [2024-10-31 22:13:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:15,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356863233] [2024-10-31 22:13:15,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356863233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:15,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:15,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115507985] [2024-10-31 22:13:15,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:15,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:15,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:15,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:15,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:15,548 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:15,646 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-10-31 22:13:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:15,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-31 22:13:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:15,648 INFO L225 Difference]: With dead ends: 32 [2024-10-31 22:13:15,648 INFO L226 Difference]: Without dead ends: 31 [2024-10-31 22:13:15,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:13:15,650 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:15,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 73 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-31 22:13:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-31 22:13:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:13:15,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-10-31 22:13:15,664 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 11 [2024-10-31 22:13:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:15,665 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-10-31 22:13:15,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-10-31 22:13:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 22:13:15,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:15,666 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:15,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:13:15,666 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:15,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 426919062, now seen corresponding path program 1 times [2024-10-31 22:13:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007335660] [2024-10-31 22:13:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:15,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:15,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007335660] [2024-10-31 22:13:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007335660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:15,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:13:15,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:13:15,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265468660] [2024-10-31 22:13:15,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:15,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:13:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:15,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:13:15,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:13:15,838 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:15,958 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-10-31 22:13:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:13:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 22:13:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:15,960 INFO L225 Difference]: With dead ends: 41 [2024-10-31 22:13:15,960 INFO L226 Difference]: Without dead ends: 40 [2024-10-31 22:13:15,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:13:15,966 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:15,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 106 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-31 22:13:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-10-31 22:13:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:13:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-10-31 22:13:15,976 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 12 [2024-10-31 22:13:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:15,977 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-10-31 22:13:15,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:13:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-10-31 22:13:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 22:13:15,978 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:15,978 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:15,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:13:15,978 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:15,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash 426957791, now seen corresponding path program 1 times [2024-10-31 22:13:15,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:15,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421896804] [2024-10-31 22:13:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:15,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:16,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:16,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421896804] [2024-10-31 22:13:16,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421896804] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:16,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466480962] [2024-10-31 22:13:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:16,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:16,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:16,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:16,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:13:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:16,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:13:16,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:16,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466480962] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:16,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:16,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-31 22:13:16,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380202043] [2024-10-31 22:13:16,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:16,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-31 22:13:16,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:16,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-31 22:13:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:13:16,465 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-10-31 22:13:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:16,680 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2024-10-31 22:13:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 22:13:16,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 22:13:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:16,682 INFO L225 Difference]: With dead ends: 74 [2024-10-31 22:13:16,682 INFO L226 Difference]: Without dead ends: 56 [2024-10-31 22:13:16,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:13:16,686 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 35 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:16,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 140 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-31 22:13:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2024-10-31 22:13:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 40 states have internal predecessors, (48), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:13:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2024-10-31 22:13:16,702 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 12 [2024-10-31 22:13:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:16,706 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2024-10-31 22:13:16,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-10-31 22:13:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2024-10-31 22:13:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-31 22:13:16,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:16,707 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:16,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:13:16,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:13:16,908 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:16,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash 850134625, now seen corresponding path program 1 times [2024-10-31 22:13:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974308414] [2024-10-31 22:13:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974308414] [2024-10-31 22:13:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974308414] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282607805] [2024-10-31 22:13:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:17,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:17,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:17,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:17,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:13:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:17,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:13:17,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:17,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:17,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282607805] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:17,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:17,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-31 22:13:17,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074568598] [2024-10-31 22:13:17,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:17,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:13:17,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:17,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:13:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:13:17,379 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2024-10-31 22:13:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:17,931 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2024-10-31 22:13:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-31 22:13:17,932 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 17 [2024-10-31 22:13:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:17,934 INFO L225 Difference]: With dead ends: 80 [2024-10-31 22:13:17,934 INFO L226 Difference]: Without dead ends: 79 [2024-10-31 22:13:17,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2024-10-31 22:13:17,935 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 74 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:17,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 172 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:13:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-10-31 22:13:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2024-10-31 22:13:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-31 22:13:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-10-31 22:13:17,948 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 17 [2024-10-31 22:13:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:17,949 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-10-31 22:13:17,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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) [2024-10-31 22:13:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-10-31 22:13:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-31 22:13:17,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:17,950 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-31 22:13:17,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:13:18,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:13:18,151 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:18,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash -924745014, now seen corresponding path program 2 times [2024-10-31 22:13:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:18,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28527233] [2024-10-31 22:13:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:18,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:18,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28527233] [2024-10-31 22:13:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28527233] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299226689] [2024-10-31 22:13:18,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:13:18,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:18,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:18,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:18,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:13:18,403 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:13:18,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:18,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:13:18,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:18,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299226689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:18,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-10-31 22:13:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646600301] [2024-10-31 22:13:18,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:18,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-31 22:13:18,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:18,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-31 22:13:18,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:13:18,744 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 22 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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) [2024-10-31 22:13:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:19,378 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2024-10-31 22:13:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-31 22:13:19,379 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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 [2024-10-31 22:13:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:19,381 INFO L225 Difference]: With dead ends: 144 [2024-10-31 22:13:19,381 INFO L226 Difference]: Without dead ends: 123 [2024-10-31 22:13:19,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2024-10-31 22:13:19,384 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 136 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:19,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 216 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:13:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-31 22:13:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2024-10-31 22:13:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 79 states have internal predecessors, (97), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-31 22:13:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2024-10-31 22:13:19,405 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 27 [2024-10-31 22:13:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:19,405 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2024-10-31 22:13:19,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 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) [2024-10-31 22:13:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2024-10-31 22:13:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-31 22:13:19,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:19,407 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:19,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:13:19,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 22:13:19,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:19,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:19,609 INFO L85 PathProgramCache]: Analyzing trace with hash -847775146, now seen corresponding path program 2 times [2024-10-31 22:13:19,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:19,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976442357] [2024-10-31 22:13:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:19,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976442357] [2024-10-31 22:13:19,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976442357] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:19,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26424198] [2024-10-31 22:13:19,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:13:19,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:19,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:19,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:19,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:13:19,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-31 22:13:19,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:19,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:13:19,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:20,069 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-31 22:13:20,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:13:20,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26424198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:13:20,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 16 [2024-10-31 22:13:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672143894] [2024-10-31 22:13:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:20,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:13:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:13:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:13:20,075 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-10-31 22:13:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:20,186 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2024-10-31 22:13:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:13:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 32 [2024-10-31 22:13:20,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:20,189 INFO L225 Difference]: With dead ends: 102 [2024-10-31 22:13:20,189 INFO L226 Difference]: Without dead ends: 101 [2024-10-31 22:13:20,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:13:20,191 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:20,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 91 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:13:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-31 22:13:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2024-10-31 22:13:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 79 states have internal predecessors, (97), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-31 22:13:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2024-10-31 22:13:20,225 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 121 transitions. Word has length 32 [2024-10-31 22:13:20,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:20,225 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 121 transitions. [2024-10-31 22:13:20,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-10-31 22:13:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 121 transitions. [2024-10-31 22:13:20,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-31 22:13:20,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:20,227 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:20,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:13:20,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:20,428 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:20,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1436603759, now seen corresponding path program 1 times [2024-10-31 22:13:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97075201] [2024-10-31 22:13:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:20,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:20,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:20,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97075201] [2024-10-31 22:13:20,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97075201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:20,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479603530] [2024-10-31 22:13:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:20,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:20,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:20,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:20,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:13:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:20,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:13:20,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:20,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:21,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479603530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:21,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:21,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-31 22:13:21,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196727558] [2024-10-31 22:13:21,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:21,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-31 22:13:21,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:21,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-31 22:13:21,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2024-10-31 22:13:21,310 INFO L87 Difference]: Start difference. First operand 94 states and 121 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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) [2024-10-31 22:13:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:22,003 INFO L93 Difference]: Finished difference Result 153 states and 192 transitions. [2024-10-31 22:13:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-31 22:13:22,004 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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 36 [2024-10-31 22:13:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:22,005 INFO L225 Difference]: With dead ends: 153 [2024-10-31 22:13:22,005 INFO L226 Difference]: Without dead ends: 135 [2024-10-31 22:13:22,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=779, Invalid=1573, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 22:13:22,007 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 167 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:22,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 219 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:13:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-10-31 22:13:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2024-10-31 22:13:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 90 states have internal predecessors, (106), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-31 22:13:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 130 transitions. [2024-10-31 22:13:22,041 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 130 transitions. Word has length 36 [2024-10-31 22:13:22,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:22,042 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 130 transitions. [2024-10-31 22:13:22,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 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) [2024-10-31 22:13:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 130 transitions. [2024-10-31 22:13:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-31 22:13:22,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:22,048 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:22,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:13:22,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:22,251 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:22,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1674911456, now seen corresponding path program 1 times [2024-10-31 22:13:22,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199270140] [2024-10-31 22:13:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:13:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:13:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-31 22:13:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-31 22:13:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:13:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:13:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 22:13:22,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:22,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199270140] [2024-10-31 22:13:22,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199270140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:22,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253775412] [2024-10-31 22:13:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:22,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:22,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:22,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:22,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:13:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:22,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:13:22,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 22:13:22,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 22:13:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253775412] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:23,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 21 [2024-10-31 22:13:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365791747] [2024-10-31 22:13:23,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:23,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-31 22:13:23,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:23,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-31 22:13:23,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:13:23,039 INFO L87 Difference]: Start difference. First operand 105 states and 130 transitions. Second operand has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-31 22:13:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:24,869 INFO L93 Difference]: Finished difference Result 172 states and 217 transitions. [2024-10-31 22:13:24,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-31 22:13:24,869 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 58 [2024-10-31 22:13:24,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:24,872 INFO L225 Difference]: With dead ends: 172 [2024-10-31 22:13:24,872 INFO L226 Difference]: Without dead ends: 171 [2024-10-31 22:13:24,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=493, Invalid=1577, Unknown=0, NotChecked=0, Total=2070 [2024-10-31 22:13:24,874 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 146 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:24,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 149 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 22:13:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-31 22:13:24,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 137. [2024-10-31 22:13:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.1775700934579438) internal successors, (126), 108 states have internal predecessors, (126), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-31 22:13:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 174 transitions. [2024-10-31 22:13:24,897 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 174 transitions. Word has length 58 [2024-10-31 22:13:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:24,897 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 174 transitions. [2024-10-31 22:13:24,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-10-31 22:13:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 174 transitions. [2024-10-31 22:13:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-31 22:13:24,900 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:24,900 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2024-10-31 22:13:24,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:13:25,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:25,103 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:25,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash 27395914, now seen corresponding path program 3 times [2024-10-31 22:13:25,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:25,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872118927] [2024-10-31 22:13:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:25,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:25,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:25,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872118927] [2024-10-31 22:13:25,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872118927] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:25,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745017268] [2024-10-31 22:13:25,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:13:25,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:25,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:25,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:25,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:13:26,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-31 22:13:26,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:26,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:13:26,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-10-31 22:13:26,128 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:13:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745017268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:13:26,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:13:26,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [26] total 30 [2024-10-31 22:13:26,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909304367] [2024-10-31 22:13:26,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:13:26,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:13:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:13:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2024-10-31 22:13:26,132 INFO L87 Difference]: Start difference. First operand 137 states and 174 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-10-31 22:13:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:26,230 INFO L93 Difference]: Finished difference Result 143 states and 180 transitions. [2024-10-31 22:13:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:13:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 67 [2024-10-31 22:13:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:26,233 INFO L225 Difference]: With dead ends: 143 [2024-10-31 22:13:26,234 INFO L226 Difference]: Without dead ends: 142 [2024-10-31 22:13:26,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=805, Unknown=0, NotChecked=0, Total=1056 [2024-10-31 22:13:26,236 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:26,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:13:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-31 22:13:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2024-10-31 22:13:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-31 22:13:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 173 transitions. [2024-10-31 22:13:26,258 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 173 transitions. Word has length 67 [2024-10-31 22:13:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:26,261 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 173 transitions. [2024-10-31 22:13:26,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-10-31 22:13:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 173 transitions. [2024-10-31 22:13:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-31 22:13:26,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:26,263 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:26,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:13:26,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-31 22:13:26,465 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:26,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash -948863590, now seen corresponding path program 2 times [2024-10-31 22:13:26,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466943989] [2024-10-31 22:13:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:27,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:27,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466943989] [2024-10-31 22:13:27,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466943989] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:27,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910979090] [2024-10-31 22:13:27,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:13:27,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:27,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:27,426 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:27,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:13:27,496 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:13:27,496 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:27,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-31 22:13:27,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:27,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:13:28,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910979090] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:28,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 28] total 57 [2024-10-31 22:13:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201663709] [2024-10-31 22:13:28,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:28,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-31 22:13:28,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-31 22:13:29,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306 [2024-10-31 22:13:29,004 INFO L87 Difference]: Start difference. First operand 136 states and 173 transitions. Second operand has 58 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 57 states have internal predecessors, (147), 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) [2024-10-31 22:13:35,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-10-31 22:13:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:13:36,085 INFO L93 Difference]: Finished difference Result 373 states and 471 transitions. [2024-10-31 22:13:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-10-31 22:13:36,086 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 57 states have internal predecessors, (147), 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 71 [2024-10-31 22:13:36,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:13:36,090 INFO L225 Difference]: With dead ends: 373 [2024-10-31 22:13:36,091 INFO L226 Difference]: Without dead ends: 356 [2024-10-31 22:13:36,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4913 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4572, Invalid=14334, Unknown=0, NotChecked=0, Total=18906 [2024-10-31 22:13:36,102 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 581 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:13:36,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 287 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 341 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-31 22:13:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-10-31 22:13:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 206. [2024-10-31 22:13:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 177 states have (on average 1.2542372881355932) internal successors, (222), 177 states have internal predecessors, (222), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-31 22:13:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 270 transitions. [2024-10-31 22:13:36,135 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 270 transitions. Word has length 71 [2024-10-31 22:13:36,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:13:36,136 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 270 transitions. [2024-10-31 22:13:36,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 57 states have internal predecessors, (147), 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) [2024-10-31 22:13:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 270 transitions. [2024-10-31 22:13:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-31 22:13:36,138 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:13:36,139 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:13:36,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-31 22:13:36,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 22:13:36,340 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-31 22:13:36,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:13:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash -289877419, now seen corresponding path program 2 times [2024-10-31 22:13:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:13:36,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049419281] [2024-10-31 22:13:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:13:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:13:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:36,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:13:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:36,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-31 22:13:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:36,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-31 22:13:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:36,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-31 22:13:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:36,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-31 22:13:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:36,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-31 22:13:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:13:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 22:13:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-31 22:13:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-31 22:13:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-31 22:13:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-31 22:13:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:13:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-31 22:13:37,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:13:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049419281] [2024-10-31 22:13:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049419281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:13:37,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033837715] [2024-10-31 22:13:37,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:13:37,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:13:37,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:13:37,049 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:13:37,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24c91b82-469c-4b5b-85e3-f99d635e91c4/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 22:13:37,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:13:37,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:13:37,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:13:37,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:13:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-10-31 22:13:37,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:13:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-31 22:13:38,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033837715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:13:38,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:13:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 29 [2024-10-31 22:13:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86185795] [2024-10-31 22:13:38,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:13:38,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-31 22:13:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:13:38,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-31 22:13:38,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2024-10-31 22:13:38,234 INFO L87 Difference]: Start difference. First operand 206 states and 270 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 4 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2024-10-31 22:13:44,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []