./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.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_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/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_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/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_c6c62a76-9d74-4d41-8adc-9a343d853ed8/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 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:37,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:37,331 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 21:59:37,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:37,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:37,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:37,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:37,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:37,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:37,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:37,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:59:37,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:59:37,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:37,360 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:37,360 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:37,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:37,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:59:37,362 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:59:37,362 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:37,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:59:37,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:37,363 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:59:37,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:59:37,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:59:37,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:37,365 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 21:59:37,365 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:59:37,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:59:37,366 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:59:37,366 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:37,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:37,367 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:37,367 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:59:37,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:59:37,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:37,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:37,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:59:37,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:59:37,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:37,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:59:37,370 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:59:37,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:59:37,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:59:37,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:59:37,371 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_c6c62a76-9d74-4d41-8adc-9a343d853ed8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1be5a7d97aa41e02c549ddce0b54861696e25bfa9b91d41dbf151eb81f7686c7 [2024-10-31 21:59:37,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:37,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:37,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:37,730 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:37,731 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:37,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c Unable to find full path for "g++" [2024-10-31 21:59:40,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:59:40,288 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:59:40,289 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2024-10-31 21:59:40,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/data/5d539d2ac/d253317a06f94a5a908f0304cf057c01/FLAGe5d87aeaf [2024-10-31 21:59:40,345 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/data/5d539d2ac/d253317a06f94a5a908f0304cf057c01 [2024-10-31 21:59:40,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:59:40,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:59:40,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:40,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:59:40,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:59:40,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170b61a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40, skipping insertion in model container [2024-10-31 21:59:40,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,410 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:59:40,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:40,688 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:59:40,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:40,729 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:59:40,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40 WrapperNode [2024-10-31 21:59:40,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:40,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:40,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:59:40,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:59:40,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,765 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 19 [2024-10-31 21:59:40,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:40,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:59:40,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:59:40,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:59:40,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,780 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,796 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 21:59:40,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:59:40,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:59:40,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:59:40,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:59:40,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (1/1) ... [2024-10-31 21:59:40,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:40,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:40,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:59:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:59:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:59:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:59:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:59:40,879 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-10-31 21:59:40,879 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-10-31 21:59:40,940 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:59:40,942 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:59:41,067 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-31 21:59:41,067 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:59:41,080 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:59:41,080 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:59:41,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:41 BoogieIcfgContainer [2024-10-31 21:59:41,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:59:41,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:59:41,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:59:41,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:59:41,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:59:40" (1/3) ... [2024-10-31 21:59:41,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d018c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:41, skipping insertion in model container [2024-10-31 21:59:41,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:40" (2/3) ... [2024-10-31 21:59:41,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d018c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:41, skipping insertion in model container [2024-10-31 21:59:41,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:41" (3/3) ... [2024-10-31 21:59:41,091 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2024-10-31 21:59:41,107 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:59:41,108 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-31 21:59:41,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:59:41,168 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;@49997662, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:59:41,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 21:59:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 21:59:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 21:59:41,181 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:41,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 21:59:41,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:41,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash 890350836, now seen corresponding path program 1 times [2024-10-31 21:59:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598501244] [2024-10-31 21:59:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:41,467 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 21:59:41,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598501244] [2024-10-31 21:59:41,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598501244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:41,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:41,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:59:41,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777633657] [2024-10-31 21:59:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:41,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:59:41,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:41,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:59:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:59:41,514 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.375) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:41,613 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2024-10-31 21:59:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:59:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 21:59:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:41,625 INFO L225 Difference]: With dead ends: 46 [2024-10-31 21:59:41,625 INFO L226 Difference]: Without dead ends: 28 [2024-10-31 21:59:41,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:59:41,631 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:41,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 67 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-31 21:59:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2024-10-31 21:59:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 21:59:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-10-31 21:59:41,676 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 6 [2024-10-31 21:59:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:41,677 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-10-31 21:59:41,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-10-31 21:59:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 21:59:41,678 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:41,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:41,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:59:41,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:41,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1831072195, now seen corresponding path program 1 times [2024-10-31 21:59:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:41,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051678232] [2024-10-31 21:59:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:41,804 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 21:59:41,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:41,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051678232] [2024-10-31 21:59:41,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051678232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:41,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:41,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:59:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752785771] [2024-10-31 21:59:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:41,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:59:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:59:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:59:41,813 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:41,868 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-10-31 21:59:41,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 21:59:41,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 21:59:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:41,871 INFO L225 Difference]: With dead ends: 27 [2024-10-31 21:59:41,871 INFO L226 Difference]: Without dead ends: 26 [2024-10-31 21:59:41,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:59:41,873 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:41,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:59:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-31 21:59:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-10-31 21:59:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 21:59:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-10-31 21:59:41,884 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2024-10-31 21:59:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:41,884 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-10-31 21:59:41,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-10-31 21:59:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 21:59:41,885 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:41,886 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:41,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:59:41,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:41,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1922931507, now seen corresponding path program 1 times [2024-10-31 21:59:41,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:41,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277595572] [2024-10-31 21:59:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:42,010 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 21:59:42,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:42,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277595572] [2024-10-31 21:59:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277595572] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215552851] [2024-10-31 21:59:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:42,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:42,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:42,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:42,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:59:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:42,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:59:42,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:42,138 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 21:59:42,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:42,282 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 21:59:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215552851] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:42,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:42,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 21:59:42,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618097897] [2024-10-31 21:59:42,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:42,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 21:59:42,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:42,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 21:59:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:59:42,291 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:42,514 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2024-10-31 21:59:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 21:59:42,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 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 21:59:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:42,518 INFO L225 Difference]: With dead ends: 76 [2024-10-31 21:59:42,518 INFO L226 Difference]: Without dead ends: 68 [2024-10-31 21:59:42,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:59:42,520 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 99 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:42,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 95 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-31 21:59:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2024-10-31 21:59:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 43 states have internal predecessors, (54), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-31 21:59:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-10-31 21:59:42,551 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 11 [2024-10-31 21:59:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:42,552 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-10-31 21:59:42,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-10-31 21:59:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-31 21:59:42,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:42,553 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:42,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:42,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:42,760 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:42,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1856245274, now seen corresponding path program 1 times [2024-10-31 21:59:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434913202] [2024-10-31 21:59:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:42,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 21:59:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 21:59:42,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:42,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434913202] [2024-10-31 21:59:42,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434913202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:42,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:42,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 21:59:42,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051286959] [2024-10-31 21:59:42,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:42,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:59:42,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:42,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:59:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:42,871 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:42,900 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2024-10-31 21:59:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:59:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-10-31 21:59:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:42,903 INFO L225 Difference]: With dead ends: 74 [2024-10-31 21:59:42,903 INFO L226 Difference]: Without dead ends: 72 [2024-10-31 21:59:42,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:59:42,905 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:42,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:59:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-31 21:59:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-31 21:59:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 57 states have internal predecessors, (69), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-31 21:59:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2024-10-31 21:59:42,924 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 19 [2024-10-31 21:59:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:42,924 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2024-10-31 21:59:42,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:42,925 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2024-10-31 21:59:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-31 21:59:42,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:42,926 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:42,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:59:42,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:42,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash -614066819, now seen corresponding path program 1 times [2024-10-31 21:59:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:42,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108624338] [2024-10-31 21:59:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:42,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:42,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:59:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:42,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 21:59:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:42,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108624338] [2024-10-31 21:59:42,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108624338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:42,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:42,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 21:59:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015643981] [2024-10-31 21:59:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:43,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:59:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:43,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:59:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:59:43,002 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:43,023 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2024-10-31 21:59:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:59:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-10-31 21:59:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:43,025 INFO L225 Difference]: With dead ends: 72 [2024-10-31 21:59:43,026 INFO L226 Difference]: Without dead ends: 71 [2024-10-31 21:59:43,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 21:59:43,027 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:43,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:59:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-31 21:59:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-31 21:59:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-31 21:59:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2024-10-31 21:59:43,051 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 24 [2024-10-31 21:59:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:43,051 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2024-10-31 21:59:43,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:59:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2024-10-31 21:59:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-31 21:59:43,055 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:43,056 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1] [2024-10-31 21:59:43,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:59:43,056 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:43,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1990585420, now seen corresponding path program 2 times [2024-10-31 21:59:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:43,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536536777] [2024-10-31 21:59:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:43,444 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 21:59:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536536777] [2024-10-31 21:59:43,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536536777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403982938] [2024-10-31 21:59:43,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:43,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:43,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:43,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:59:43,513 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:43,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:43,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 21:59:43,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:43,596 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 21:59:43,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:43,908 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 21:59:43,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403982938] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:43,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:43,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-10-31 21:59:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836616080] [2024-10-31 21:59:43,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:43,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-31 21:59:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-31 21:59:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-10-31 21:59:43,914 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:44,424 INFO L93 Difference]: Finished difference Result 188 states and 204 transitions. [2024-10-31 21:59:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 21:59:44,425 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-31 21:59:44,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:44,426 INFO L225 Difference]: With dead ends: 188 [2024-10-31 21:59:44,427 INFO L226 Difference]: Without dead ends: 156 [2024-10-31 21:59:44,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-10-31 21:59:44,429 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 272 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:44,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 201 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:59:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-10-31 21:59:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 146. [2024-10-31 21:59:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 116 states have (on average 1.146551724137931) internal successors, (133), 116 states have internal predecessors, (133), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2024-10-31 21:59:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2024-10-31 21:59:44,452 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 26 [2024-10-31 21:59:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:44,452 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2024-10-31 21:59:44,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:44,452 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2024-10-31 21:59:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-31 21:59:44,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:44,453 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 21:59:44,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 21:59:44,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:44,658 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:44,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1350016289, now seen corresponding path program 1 times [2024-10-31 21:59:44,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:44,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137164927] [2024-10-31 21:59:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:44,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:44,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 21:59:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:44,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-31 21:59:44,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137164927] [2024-10-31 21:59:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137164927] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:44,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678109006] [2024-10-31 21:59:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:44,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:44,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:44,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:44,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 21:59:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:44,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 21:59:44,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 21:59:44,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 21:59:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678109006] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:45,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:45,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-10-31 21:59:45,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929213388] [2024-10-31 21:59:45,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:45,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 21:59:45,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 21:59:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-31 21:59:45,093 INFO L87 Difference]: Start difference. First operand 146 states and 163 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-31 21:59:45,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:45,256 INFO L93 Difference]: Finished difference Result 276 states and 322 transitions. [2024-10-31 21:59:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 21:59:45,257 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 40 [2024-10-31 21:59:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:45,259 INFO L225 Difference]: With dead ends: 276 [2024-10-31 21:59:45,259 INFO L226 Difference]: Without dead ends: 275 [2024-10-31 21:59:45,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-10-31 21:59:45,261 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:45,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 42 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-10-31 21:59:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2024-10-31 21:59:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 221 states have (on average 1.0769230769230769) internal successors, (238), 218 states have internal predecessors, (238), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2024-10-31 21:59:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 295 transitions. [2024-10-31 21:59:45,295 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 295 transitions. Word has length 40 [2024-10-31 21:59:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:45,296 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 295 transitions. [2024-10-31 21:59:45,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-31 21:59:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 295 transitions. [2024-10-31 21:59:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-31 21:59:45,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:45,298 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1] [2024-10-31 21:59:45,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:45,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:45,502 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:45,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash -91829804, now seen corresponding path program 3 times [2024-10-31 21:59:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025770534] [2024-10-31 21:59:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:45,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:46,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025770534] [2024-10-31 21:59:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025770534] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:46,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504477148] [2024-10-31 21:59:46,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:59:46,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:46,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:46,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 21:59:46,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-31 21:59:46,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:46,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-31 21:59:46,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:46,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:59:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504477148] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:47,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-10-31 21:59:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412751567] [2024-10-31 21:59:47,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:47,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-31 21:59:47,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:47,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-31 21:59:47,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-10-31 21:59:47,105 INFO L87 Difference]: Start difference. First operand 275 states and 295 transitions. Second operand has 48 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 26 states have internal predecessors, (89), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:47,338 INFO L93 Difference]: Finished difference Result 280 states and 295 transitions. [2024-10-31 21:59:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-31 21:59:47,339 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 26 states have internal predecessors, (89), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-31 21:59:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:47,343 INFO L225 Difference]: With dead ends: 280 [2024-10-31 21:59:47,346 INFO L226 Difference]: Without dead ends: 279 [2024-10-31 21:59:47,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=860, Invalid=2110, Unknown=0, NotChecked=0, Total=2970 [2024-10-31 21:59:47,360 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 168 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:47,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 136 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-10-31 21:59:47,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 274. [2024-10-31 21:59:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 221 states have (on average 1.0723981900452488) internal successors, (237), 217 states have internal predecessors, (237), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2024-10-31 21:59:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 294 transitions. [2024-10-31 21:59:47,401 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 294 transitions. Word has length 56 [2024-10-31 21:59:47,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:47,402 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 294 transitions. [2024-10-31 21:59:47,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 26 states have internal predecessors, (89), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:59:47,403 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 294 transitions. [2024-10-31 21:59:47,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-31 21:59:47,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:47,407 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2024-10-31 21:59:47,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:47,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:47,611 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:47,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash -692645514, now seen corresponding path program 2 times [2024-10-31 21:59:47,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:47,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659262460] [2024-10-31 21:59:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:47,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:47,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:59:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:47,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:47,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:47,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:47,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-31 21:59:47,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659262460] [2024-10-31 21:59:47,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659262460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:47,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087451471] [2024-10-31 21:59:47,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:59:47,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:47,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:47,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:47,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 21:59:48,006 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:59:48,006 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:48,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 21:59:48,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 21:59:48,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 21:59:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087451471] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:48,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:48,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2024-10-31 21:59:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482938473] [2024-10-31 21:59:48,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:48,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-31 21:59:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:48,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-31 21:59:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2024-10-31 21:59:48,837 INFO L87 Difference]: Start difference. First operand 274 states and 294 transitions. Second operand has 25 states, 24 states have (on average 2.25) internal successors, (54), 25 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-10-31 21:59:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:49,150 INFO L93 Difference]: Finished difference Result 593 states and 678 transitions. [2024-10-31 21:59:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-31 21:59:49,151 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 25 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 55 [2024-10-31 21:59:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:49,154 INFO L225 Difference]: With dead ends: 593 [2024-10-31 21:59:49,154 INFO L226 Difference]: Without dead ends: 369 [2024-10-31 21:59:49,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1496, Unknown=0, NotChecked=0, Total=1892 [2024-10-31 21:59:49,157 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:49,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 21:59:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-10-31 21:59:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2024-10-31 21:59:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 300 states have (on average 1.0366666666666666) internal successors, (311), 291 states have internal predecessors, (311), 12 states have call successors, (12), 11 states have call predecessors, (12), 56 states have return successors, (66), 66 states have call predecessors, (66), 11 states have call successors, (66) [2024-10-31 21:59:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 389 transitions. [2024-10-31 21:59:49,186 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 389 transitions. Word has length 55 [2024-10-31 21:59:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:49,186 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 389 transitions. [2024-10-31 21:59:49,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 25 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-10-31 21:59:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 389 transitions. [2024-10-31 21:59:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-10-31 21:59:49,190 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:49,190 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2024-10-31 21:59:49,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 21:59:49,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:49,394 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:49,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 955887606, now seen corresponding path program 3 times [2024-10-31 21:59:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:49,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582156216] [2024-10-31 21:59:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:49,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:49,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-31 21:59:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:49,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:49,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 11 proven. 275 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-10-31 21:59:50,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:50,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582156216] [2024-10-31 21:59:50,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582156216] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:59:50,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281440689] [2024-10-31 21:59:50,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:59:50,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:59:50,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:50,675 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:59:50,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 21:59:50,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-31 21:59:50,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:59:50,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-31 21:59:50,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:59:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-31 21:59:50,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:59:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-31 21:59:57,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281440689] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:59:57,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:59:57,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 48 [2024-10-31 21:59:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439279601] [2024-10-31 21:59:57,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:59:57,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-31 21:59:57,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:57,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-31 21:59:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 21:59:57,187 INFO L87 Difference]: Start difference. First operand 369 states and 389 transitions. Second operand has 49 states, 48 states have (on average 2.125) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2024-10-31 21:59:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:57,971 INFO L93 Difference]: Finished difference Result 1006 states and 1157 transitions. [2024-10-31 21:59:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-31 21:59:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.125) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) Word has length 115 [2024-10-31 21:59:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:57,977 INFO L225 Difference]: With dead ends: 1006 [2024-10-31 21:59:57,977 INFO L226 Difference]: Without dead ends: 429 [2024-10-31 21:59:57,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3357 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1656, Invalid=6716, Unknown=0, NotChecked=0, Total=8372 [2024-10-31 21:59:57,984 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 95 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:57,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 71 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:59:57,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-10-31 21:59:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2024-10-31 21:59:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 348 states have (on average 1.0316091954022988) internal successors, (359), 339 states have internal predecessors, (359), 12 states have call successors, (12), 11 states have call predecessors, (12), 68 states have return successors, (78), 78 states have call predecessors, (78), 11 states have call successors, (78) [2024-10-31 21:59:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 449 transitions. [2024-10-31 21:59:58,015 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 449 transitions. Word has length 115 [2024-10-31 21:59:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:58,016 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 449 transitions. [2024-10-31 21:59:58,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.125) internal successors, (102), 49 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (23), 23 states have call predecessors, (23), 1 states have call successors, (23) [2024-10-31 21:59:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 449 transitions. [2024-10-31 21:59:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-10-31 21:59:58,021 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:58,022 INFO L215 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1] [2024-10-31 21:59:58,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-31 21:59:58,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 21:59:58,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-31 21:59:58,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:58,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1103718135, now seen corresponding path program 4 times [2024-10-31 21:59:58,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:58,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516828716] [2024-10-31 21:59:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:58,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:59,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-31 21:59:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:59,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:00,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:00,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:01,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:01,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:02,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:02,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:02,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:03,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:03,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:03,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:03,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:03,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:04,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:05,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:05,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:00:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4138 backedges. 34 proven. 1265 refuted. 0 times theorem prover too weak. 2839 trivial. 0 not checked. [2024-10-31 22:00:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516828716] [2024-10-31 22:00:05,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516828716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:00:05,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183037467] [2024-10-31 22:00:05,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:00:05,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:00:05,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:05,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:00:05,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6c62a76-9d74-4d41-8adc-9a343d853ed8/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:00:05,483 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:00:05,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:00:05,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-31 22:00:05,505 INFO L278 TraceCheckSpWp]: Computing forward predicates...