./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX --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 64bit --witnessprinter.graph.data.programhash 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:30:03,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:30:03,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-08 18:30:03,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:30:03,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:30:03,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:30:03,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:30:03,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:30:03,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:30:03,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:30:03,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:30:03,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:30:03,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:30:03,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:30:03,689 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:30:03,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:30:03,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:30:03,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:30:03,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:30:03,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:30:03,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:30:03,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:30:03,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:30:03,696 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:30:03,697 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:30:03,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:30:03,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:30:03,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:30:03,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:30:03,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:30:03,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:30:03,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:30:03,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:30:03,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:30:03,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:30:03,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:30:03,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:30:03,702 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:30:03,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:30:03,703 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:30:03,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:30:03,704 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_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab1611c68b20ff5721c195b0d2c7506cb1678fd2a0003f8a2214f630d652abe [2024-11-08 18:30:03,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:30:04,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:30:04,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:30:04,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:30:04,004 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:30:04,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c Unable to find full path for "g++" [2024-11-08 18:30:06,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:30:06,333 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:30:06,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2024-11-08 18:30:06,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/data/327e76ee2/d9435da4b5554b95b545a4f71a426461/FLAGabd227ec8 [2024-11-08 18:30:06,362 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/data/327e76ee2/d9435da4b5554b95b545a4f71a426461 [2024-11-08 18:30:06,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:30:06,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:30:06,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:30:06,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:30:06,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:30:06,379 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fab1d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06, skipping insertion in model container [2024-11-08 18:30:06,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:30:06,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:30:06,612 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:30:06,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:30:06,642 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:30:06,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06 WrapperNode [2024-11-08 18:30:06,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:30:06,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:30:06,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:30:06,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:30:06,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,676 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2024-11-08 18:30:06,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:30:06,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:30:06,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:30:06,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:30:06,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,694 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-08 18:30:06,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:30:06,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:30:06,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:30:06,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:30:06,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (1/1) ... [2024-11-08 18:30:06,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:30:06,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:06,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:30:06,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:30:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-08 18:30:06,775 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-08 18:30:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:30:06,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:30:06,852 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:30:06,855 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:30:07,004 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-08 18:30:07,004 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:30:07,019 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:30:07,019 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:30:07,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:30:07 BoogieIcfgContainer [2024-11-08 18:30:07,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:30:07,024 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:30:07,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:30:07,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:30:07,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:30:06" (1/3) ... [2024-11-08 18:30:07,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a0bd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:30:07, skipping insertion in model container [2024-11-08 18:30:07,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:30:06" (2/3) ... [2024-11-08 18:30:07,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a0bd6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:30:07, skipping insertion in model container [2024-11-08 18:30:07,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:30:07" (3/3) ... [2024-11-08 18:30:07,034 INFO L112 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2024-11-08 18:30:07,057 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:30:07,058 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-08 18:30:07,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:30:07,161 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;@5cbdf811, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:30:07,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 18:30:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 18:30:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 18:30:07,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:07,176 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:07,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:07,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225386, now seen corresponding path program 1 times [2024-11-08 18:30:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:07,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304909448] [2024-11-08 18:30:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:07,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:07,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304909448] [2024-11-08 18:30:07,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304909448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:07,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:30:07,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:30:07,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925494527] [2024-11-08 18:30:07,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:30:07,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:30:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:30:07,631 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-08 18:30:07,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:07,817 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2024-11-08 18:30:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:30:07,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2024-11-08 18:30:07,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:07,830 INFO L225 Difference]: With dead ends: 47 [2024-11-08 18:30:07,830 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 18:30:07,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:30:07,839 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:07,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 92 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:30:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 18:30:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2024-11-08 18:30:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-08 18:30:07,889 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2024-11-08 18:30:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:07,890 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-08 18:30:07,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-08 18:30:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-08 18:30:07,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 18:30:07,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:07,893 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:07,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:30:07,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:07,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:07,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1484225162, now seen corresponding path program 1 times [2024-11-08 18:30:07,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:07,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500555642] [2024-11-08 18:30:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:07,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:07,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:07,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500555642] [2024-11-08 18:30:07,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500555642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:07,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:30:07,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:30:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266891135] [2024-11-08 18:30:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:07,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:30:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:07,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:30:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:30:07,990 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-08 18:30:08,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:08,079 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-08 18:30:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:30:08,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2024-11-08 18:30:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:08,080 INFO L225 Difference]: With dead ends: 29 [2024-11-08 18:30:08,081 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 18:30:08,081 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 [2024-11-08 18:30:08,083 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:08,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:30:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 18:30:08,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-11-08 18:30:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-08 18:30:08,091 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 8 [2024-11-08 18:30:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:08,091 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-08 18:30:08,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-11-08 18:30:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-08 18:30:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 18:30:08,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:08,093 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:08,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:30:08,093 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:08,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:08,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1233653331, now seen corresponding path program 1 times [2024-11-08 18:30:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897606251] [2024-11-08 18:30:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:08,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:08,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:08,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897606251] [2024-11-08 18:30:08,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897606251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:08,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:30:08,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:30:08,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994016464] [2024-11-08 18:30:08,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:08,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:30:08,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:08,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:30:08,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:30:08,175 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 18:30:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:08,230 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2024-11-08 18:30:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:30:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-08 18:30:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:08,232 INFO L225 Difference]: With dead ends: 35 [2024-11-08 18:30:08,232 INFO L226 Difference]: Without dead ends: 34 [2024-11-08 18:30:08,232 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 [2024-11-08 18:30:08,234 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:08,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:30:08,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-08 18:30:08,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-11-08 18:30:08,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:08,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-08 18:30:08,243 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2024-11-08 18:30:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:08,244 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-08 18:30:08,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 18:30:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-08 18:30:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 18:30:08,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:08,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:08,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:30:08,246 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:08,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1233660282, now seen corresponding path program 1 times [2024-11-08 18:30:08,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704628777] [2024-11-08 18:30:08,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:08,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:08,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:08,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704628777] [2024-11-08 18:30:08,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704628777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:08,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:30:08,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:30:08,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205971235] [2024-11-08 18:30:08,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:08,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:30:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:30:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:30:08,377 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 18:30:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:08,458 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-08 18:30:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:30:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-11-08 18:30:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:08,461 INFO L225 Difference]: With dead ends: 33 [2024-11-08 18:30:08,461 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 18:30:08,462 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 [2024-11-08 18:30:08,463 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:08,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:30:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 18:30:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-08 18:30:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-08 18:30:08,474 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 9 [2024-11-08 18:30:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:08,475 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-08 18:30:08,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 18:30:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-08 18:30:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 18:30:08,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:08,476 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:08,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:30:08,477 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:08,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:08,478 INFO L85 PathProgramCache]: Analyzing trace with hash -525255754, now seen corresponding path program 1 times [2024-11-08 18:30:08,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:08,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300462698] [2024-11-08 18:30:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:08,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:08,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300462698] [2024-11-08 18:30:08,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300462698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:08,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090516270] [2024-11-08 18:30:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:08,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:08,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:08,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:08,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:30:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:08,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:30:08,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:08,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:08,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090516270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:08,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-08 18:30:08,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203366134] [2024-11-08 18:30:08,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:08,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:30:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:30:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:30:08,922 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-08 18:30:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:09,129 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-11-08 18:30:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:30:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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 14 [2024-11-08 18:30:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:09,131 INFO L225 Difference]: With dead ends: 66 [2024-11-08 18:30:09,131 INFO L226 Difference]: Without dead ends: 65 [2024-11-08 18:30:09,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:30:09,132 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:09,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 106 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:30:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-08 18:30:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2024-11-08 18:30:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 40 states have internal predecessors, (47), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2024-11-08 18:30:09,155 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 14 [2024-11-08 18:30:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:09,157 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2024-11-08 18:30:09,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-08 18:30:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2024-11-08 18:30:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 18:30:09,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:09,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:09,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:30:09,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:09,364 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:09,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash -525255530, now seen corresponding path program 1 times [2024-11-08 18:30:09,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:09,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119947729] [2024-11-08 18:30:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:09,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119947729] [2024-11-08 18:30:09,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119947729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:09,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652950149] [2024-11-08 18:30:09,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:09,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:09,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:09,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:09,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:30:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:09,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:30:09,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:09,552 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:30:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652950149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:09,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:30:09,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-08 18:30:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467974516] [2024-11-08 18:30:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:09,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:30:09,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:09,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:30:09,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:30:09,555 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:09,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:09,639 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-11-08 18:30:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:30:09,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 18:30:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:09,641 INFO L225 Difference]: With dead ends: 60 [2024-11-08 18:30:09,641 INFO L226 Difference]: Without dead ends: 59 [2024-11-08 18:30:09,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:30:09,643 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:09,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:30:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-08 18:30:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2024-11-08 18:30:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.3) internal successors, (52), 43 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2024-11-08 18:30:09,653 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2024-11-08 18:30:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:09,654 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2024-11-08 18:30:09,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:09,654 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2024-11-08 18:30:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 18:30:09,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:09,655 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:09,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:30:09,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 18:30:09,859 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:09,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash 909324273, now seen corresponding path program 1 times [2024-11-08 18:30:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075247542] [2024-11-08 18:30:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075247542] [2024-11-08 18:30:09,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075247542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501081701] [2024-11-08 18:30:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:09,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:09,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:09,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:09,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:30:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:10,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:30:10,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:10,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:10,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501081701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:10,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:10,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-08 18:30:10,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018373171] [2024-11-08 18:30:10,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:10,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:30:10,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:10,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:30:10,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:30:10,169 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-08 18:30:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:10,528 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2024-11-08 18:30:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:30:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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 14 [2024-11-08 18:30:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:10,532 INFO L225 Difference]: With dead ends: 101 [2024-11-08 18:30:10,532 INFO L226 Difference]: Without dead ends: 99 [2024-11-08 18:30:10,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-08 18:30:10,533 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 95 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:10,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 102 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:30:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-08 18:30:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2024-11-08 18:30:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 62 states have internal predecessors, (79), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2024-11-08 18:30:10,561 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 14 [2024-11-08 18:30:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:10,562 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2024-11-08 18:30:10,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-08 18:30:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2024-11-08 18:30:10,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 18:30:10,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:10,565 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:10,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:30:10,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-08 18:30:10,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:10,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 909324497, now seen corresponding path program 1 times [2024-11-08 18:30:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:10,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291311291] [2024-11-08 18:30:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291311291] [2024-11-08 18:30:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291311291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:10,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260502712] [2024-11-08 18:30:10,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:10,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:10,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:10,842 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:10,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:30:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:10,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:30:10,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:10,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:10,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260502712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:10,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:10,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-08 18:30:10,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643440236] [2024-11-08 18:30:10,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:10,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:30:10,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:10,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:30:10,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:30:10,992 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-08 18:30:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:11,397 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2024-11-08 18:30:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 18:30:11,399 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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 14 [2024-11-08 18:30:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:11,400 INFO L225 Difference]: With dead ends: 117 [2024-11-08 18:30:11,400 INFO L226 Difference]: Without dead ends: 115 [2024-11-08 18:30:11,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-11-08 18:30:11,401 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 120 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:11,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 72 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:30:11,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-08 18:30:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 89. [2024-11-08 18:30:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 75 states have internal predecessors, (95), 14 states have call successors, (14), 13 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2024-11-08 18:30:11,425 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 14 [2024-11-08 18:30:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:11,425 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2024-11-08 18:30:11,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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) [2024-11-08 18:30:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2024-11-08 18:30:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 18:30:11,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:11,426 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:11,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:30:11,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 18:30:11,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:11,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash 896947802, now seen corresponding path program 1 times [2024-11-08 18:30:11,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:11,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697427921] [2024-11-08 18:30:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:11,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697427921] [2024-11-08 18:30:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697427921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766369134] [2024-11-08 18:30:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:11,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:11,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:11,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:30:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:11,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:30:11,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:11,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:30:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766369134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:11,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:30:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-08 18:30:11,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559481472] [2024-11-08 18:30:11,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:11,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:30:11,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:30:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:30:11,814 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:11,909 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2024-11-08 18:30:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 18:30:11,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 18:30:11,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:11,911 INFO L225 Difference]: With dead ends: 102 [2024-11-08 18:30:11,911 INFO L226 Difference]: Without dead ends: 101 [2024-11-08 18:30:11,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:30:11,913 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:11,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:30:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-08 18:30:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2024-11-08 18:30:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 79 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2024-11-08 18:30:11,946 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 15 [2024-11-08 18:30:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:11,946 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2024-11-08 18:30:11,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2024-11-08 18:30:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 18:30:11,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:11,947 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:11,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:30:12,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:12,148 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:12,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:12,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1875718568, now seen corresponding path program 1 times [2024-11-08 18:30:12,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:12,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508617501] [2024-11-08 18:30:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:12,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:12,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508617501] [2024-11-08 18:30:12,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508617501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396489980] [2024-11-08 18:30:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:12,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:12,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:12,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:12,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:30:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:12,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:30:12,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:12,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:30:12,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396489980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:30:12,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:30:12,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-08 18:30:12,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768759978] [2024-11-08 18:30:12,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:30:12,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:30:12,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:30:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:30:12,327 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:12,410 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2024-11-08 18:30:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:30:12,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 18:30:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:12,412 INFO L225 Difference]: With dead ends: 98 [2024-11-08 18:30:12,412 INFO L226 Difference]: Without dead ends: 97 [2024-11-08 18:30:12,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:30:12,414 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:12,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 52 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:30:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-08 18:30:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2024-11-08 18:30:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 72 states have internal predecessors, (89), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2024-11-08 18:30:12,441 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 15 [2024-11-08 18:30:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:12,441 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2024-11-08 18:30:12,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2024-11-08 18:30:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 18:30:12,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:12,445 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:12,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:30:12,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:30:12,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:12,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1875711617, now seen corresponding path program 1 times [2024-11-08 18:30:12,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:12,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915297546] [2024-11-08 18:30:12,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:12,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915297546] [2024-11-08 18:30:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915297546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433299979] [2024-11-08 18:30:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:12,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:12,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:12,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:12,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:30:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:12,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:30:12,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:12,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433299979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:12,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:12,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-08 18:30:12,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390042396] [2024-11-08 18:30:12,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:12,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 18:30:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 18:30:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-08 18:30:12,942 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-08 18:30:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:13,131 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-08 18:30:13,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:30:13,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 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 15 [2024-11-08 18:30:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:13,133 INFO L225 Difference]: With dead ends: 86 [2024-11-08 18:30:13,133 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 18:30:13,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:30:13,134 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:13,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 48 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:30:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 18:30:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2024-11-08 18:30:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 11 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-08 18:30:13,157 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 15 [2024-11-08 18:30:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:13,157 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-08 18:30:13,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-08 18:30:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-08 18:30:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 18:30:13,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:13,159 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:13,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:13,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:30:13,360 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:13,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1504515633, now seen corresponding path program 1 times [2024-11-08 18:30:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:13,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394758992] [2024-11-08 18:30:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394758992] [2024-11-08 18:30:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394758992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626690625] [2024-11-08 18:30:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:13,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:13,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:13,493 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:13,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:30:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:13,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:30:13,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:13,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:13,844 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:13,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626690625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:13,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:13,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2024-11-08 18:30:13,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753548308] [2024-11-08 18:30:13,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:13,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 18:30:13,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:13,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 18:30:13,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:30:13,847 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 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) [2024-11-08 18:30:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:14,721 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2024-11-08 18:30:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 18:30:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 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 [2024-11-08 18:30:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:14,723 INFO L225 Difference]: With dead ends: 151 [2024-11-08 18:30:14,723 INFO L226 Difference]: Without dead ends: 149 [2024-11-08 18:30:14,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=477, Invalid=1875, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:30:14,725 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 275 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:14,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 76 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:30:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-08 18:30:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 77. [2024-11-08 18:30:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2024-11-08 18:30:14,742 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 26 [2024-11-08 18:30:14,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:14,743 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2024-11-08 18:30:14,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 13 states have internal predecessors, (51), 9 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) [2024-11-08 18:30:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2024-11-08 18:30:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 18:30:14,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:14,744 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:14,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:14,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:30:14,949 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:14,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1343457996, now seen corresponding path program 1 times [2024-11-08 18:30:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:14,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349844524] [2024-11-08 18:30:14,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:14,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:15,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:15,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349844524] [2024-11-08 18:30:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349844524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:15,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056365296] [2024-11-08 18:30:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:15,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:15,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:15,110 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:15,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:30:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:15,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:30:15,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:15,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:15,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056365296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:15,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:15,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-08 18:30:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120236393] [2024-11-08 18:30:15,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:15,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:30:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:30:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:30:15,394 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:16,113 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2024-11-08 18:30:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:30:16,113 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 18:30:16,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:16,115 INFO L225 Difference]: With dead ends: 195 [2024-11-08 18:30:16,115 INFO L226 Difference]: Without dead ends: 193 [2024-11-08 18:30:16,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 18:30:16,117 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 129 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:16,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 114 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:30:16,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-08 18:30:16,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 119. [2024-11-08 18:30:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 99 states have internal predecessors, (119), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2024-11-08 18:30:16,143 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 26 [2024-11-08 18:30:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:16,143 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2024-11-08 18:30:16,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2024-11-08 18:30:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 18:30:16,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:16,145 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:30:16,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:16,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:16,346 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:16,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1894821127, now seen corresponding path program 2 times [2024-11-08 18:30:16,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:16,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642588585] [2024-11-08 18:30:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:16,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:16,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642588585] [2024-11-08 18:30:16,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642588585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:16,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412643495] [2024-11-08 18:30:16,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:30:16,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:16,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:16,554 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:16,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:30:16,616 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:30:16,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:16,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:30:16,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:16,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:17,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412643495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:17,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:17,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 29 [2024-11-08 18:30:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320246534] [2024-11-08 18:30:17,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:17,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 18:30:17,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 18:30:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2024-11-08 18:30:17,064 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:18,696 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2024-11-08 18:30:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-08 18:30:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 18:30:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:18,699 INFO L225 Difference]: With dead ends: 263 [2024-11-08 18:30:18,699 INFO L226 Difference]: Without dead ends: 261 [2024-11-08 18:30:18,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1769 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1149, Invalid=5013, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 18:30:18,703 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 382 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:18,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 137 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:30:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-08 18:30:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 144. [2024-11-08 18:30:18,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 119 states have (on average 1.218487394957983) internal successors, (145), 120 states have internal predecessors, (145), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2024-11-08 18:30:18,741 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 38 [2024-11-08 18:30:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:18,744 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2024-11-08 18:30:18,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 17 states have internal predecessors, (71), 13 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2024-11-08 18:30:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 18:30:18,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:18,748 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:30:18,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:18,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:18,948 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:18,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash 28164967, now seen corresponding path program 2 times [2024-11-08 18:30:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:18,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99359631] [2024-11-08 18:30:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:30:19,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99359631] [2024-11-08 18:30:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99359631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755548484] [2024-11-08 18:30:19,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:30:19,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:19,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:19,180 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:19,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:30:19,239 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:30:19,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:19,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:30:19,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:30:19,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 41 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:30:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755548484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:19,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:19,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2024-11-08 18:30:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24664176] [2024-11-08 18:30:19,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:19,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:30:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:30:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:30:19,710 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:20,401 INFO L93 Difference]: Finished difference Result 406 states and 473 transitions. [2024-11-08 18:30:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:30:20,401 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 18:30:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:20,403 INFO L225 Difference]: With dead ends: 406 [2024-11-08 18:30:20,404 INFO L226 Difference]: Without dead ends: 330 [2024-11-08 18:30:20,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:30:20,408 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 130 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:20,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 122 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:30:20,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-08 18:30:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 260. [2024-11-08 18:30:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 214 states have (on average 1.1682242990654206) internal successors, (250), 219 states have internal predecessors, (250), 44 states have call successors, (44), 40 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 294 transitions. [2024-11-08 18:30:20,480 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 294 transitions. Word has length 38 [2024-11-08 18:30:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:20,480 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 294 transitions. [2024-11-08 18:30:20,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 14 states have internal predecessors, (57), 8 states have call successors, (12), 11 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 294 transitions. [2024-11-08 18:30:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 18:30:20,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:20,482 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:20,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:20,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 18:30:20,686 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:20,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash 917101277, now seen corresponding path program 2 times [2024-11-08 18:30:20,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:20,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089933020] [2024-11-08 18:30:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:20,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:20,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089933020] [2024-11-08 18:30:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089933020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110025147] [2024-11-08 18:30:20,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:30:20,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:20,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:20,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:20,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 18:30:20,933 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:30:20,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:20,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:30:20,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:21,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:21,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110025147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:21,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:21,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-08 18:30:21,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953590488] [2024-11-08 18:30:21,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:21,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:30:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:30:21,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:30:21,294 INFO L87 Difference]: Start difference. First operand 260 states and 294 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:22,662 INFO L93 Difference]: Finished difference Result 582 states and 644 transitions. [2024-11-08 18:30:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-08 18:30:22,663 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 18:30:22,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:22,665 INFO L225 Difference]: With dead ends: 582 [2024-11-08 18:30:22,666 INFO L226 Difference]: Without dead ends: 580 [2024-11-08 18:30:22,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=981, Invalid=4275, Unknown=0, NotChecked=0, Total=5256 [2024-11-08 18:30:22,668 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 462 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:22,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 128 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:30:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-08 18:30:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 301. [2024-11-08 18:30:22,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 248 states have (on average 1.1733870967741935) internal successors, (291), 253 states have internal predecessors, (291), 51 states have call successors, (51), 47 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 342 transitions. [2024-11-08 18:30:22,744 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 342 transitions. Word has length 38 [2024-11-08 18:30:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:22,744 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 342 transitions. [2024-11-08 18:30:22,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 342 transitions. [2024-11-08 18:30:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 18:30:22,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:22,746 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-08 18:30:22,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:22,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:30:22,947 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:22,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1885503363, now seen corresponding path program 3 times [2024-11-08 18:30:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:22,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366313198] [2024-11-08 18:30:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 68 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 18:30:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366313198] [2024-11-08 18:30:23,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366313198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:23,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780171304] [2024-11-08 18:30:23,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:30:23,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:23,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:23,173 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:23,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 18:30:23,221 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 18:30:23,221 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:23,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 18:30:23,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 18:30:23,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 18:30:23,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780171304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:23,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:23,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2024-11-08 18:30:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318408332] [2024-11-08 18:30:23,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:23,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:30:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:23,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:30:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:30:23,302 INFO L87 Difference]: Start difference. First operand 301 states and 342 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:23,549 INFO L93 Difference]: Finished difference Result 334 states and 380 transitions. [2024-11-08 18:30:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:30:23,550 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-08 18:30:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:23,551 INFO L225 Difference]: With dead ends: 334 [2024-11-08 18:30:23,551 INFO L226 Difference]: Without dead ends: 142 [2024-11-08 18:30:23,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:30:23,553 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:23,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 83 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:30:23,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-08 18:30:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2024-11-08 18:30:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 98 states have (on average 1.030612244897959) internal successors, (101), 98 states have internal predecessors, (101), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2024-11-08 18:30:23,577 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 50 [2024-11-08 18:30:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:23,577 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2024-11-08 18:30:23,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 9 states have internal predecessors, (48), 7 states have call successors, (11), 7 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2024-11-08 18:30:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 18:30:23,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:23,578 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:23,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 18:30:23,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:30:23,782 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:23,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:23,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1446440850, now seen corresponding path program 4 times [2024-11-08 18:30:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:23,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419494297] [2024-11-08 18:30:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:23,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:24,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419494297] [2024-11-08 18:30:24,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419494297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501524810] [2024-11-08 18:30:24,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:30:24,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:24,222 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:24,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 18:30:24,282 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:30:24,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:24,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:30:24,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:24,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:24,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501524810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:24,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:24,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2024-11-08 18:30:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117447386] [2024-11-08 18:30:24,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:24,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 18:30:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 18:30:24,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1626, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 18:30:24,916 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:26,882 INFO L93 Difference]: Finished difference Result 247 states and 263 transitions. [2024-11-08 18:30:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-08 18:30:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-08 18:30:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:26,884 INFO L225 Difference]: With dead ends: 247 [2024-11-08 18:30:26,884 INFO L226 Difference]: Without dead ends: 246 [2024-11-08 18:30:26,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2251, Invalid=9739, Unknown=0, NotChecked=0, Total=11990 [2024-11-08 18:30:26,888 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 692 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:26,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 91 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:30:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-08 18:30:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2024-11-08 18:30:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 198 states have (on average 1.0303030303030303) internal successors, (204), 198 states have internal predecessors, (204), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 243 transitions. [2024-11-08 18:30:26,936 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 243 transitions. Word has length 62 [2024-11-08 18:30:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:26,937 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 243 transitions. [2024-11-08 18:30:26,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 24 states have internal predecessors, (102), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 243 transitions. [2024-11-08 18:30:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-08 18:30:26,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:26,938 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2024-11-08 18:30:26,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:27,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:30:27,139 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:27,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -349479622, now seen corresponding path program 2 times [2024-11-08 18:30:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:27,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759019999] [2024-11-08 18:30:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:27,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:27,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759019999] [2024-11-08 18:30:27,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759019999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:27,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426622242] [2024-11-08 18:30:27,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:30:27,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:27,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:27,781 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:27,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 18:30:27,848 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:30:27,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:27,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:30:27,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:28,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426622242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:28,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2024-11-08 18:30:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561826855] [2024-11-08 18:30:28,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:28,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 18:30:28,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 18:30:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 18:30:28,852 INFO L87 Difference]: Start difference. First operand 238 states and 243 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:30,039 INFO L93 Difference]: Finished difference Result 279 states and 286 transitions. [2024-11-08 18:30:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-08 18:30:30,040 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-08 18:30:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:30,041 INFO L225 Difference]: With dead ends: 279 [2024-11-08 18:30:30,041 INFO L226 Difference]: Without dead ends: 278 [2024-11-08 18:30:30,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2350 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1323, Invalid=7419, Unknown=0, NotChecked=0, Total=8742 [2024-11-08 18:30:30,044 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 416 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:30,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 168 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:30:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-08 18:30:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2024-11-08 18:30:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 223 states have (on average 1.0179372197309418) internal successors, (227), 223 states have internal predecessors, (227), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2024-11-08 18:30:30,084 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 80 [2024-11-08 18:30:30,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:30,084 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2024-11-08 18:30:30,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2024-11-08 18:30:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-08 18:30:30,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:30,086 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:30,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 18:30:30,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:30,286 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:30,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash -168402537, now seen corresponding path program 5 times [2024-11-08 18:30:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:30,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20582186] [2024-11-08 18:30:30,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:30,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:31,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20582186] [2024-11-08 18:30:31,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20582186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037871311] [2024-11-08 18:30:31,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:30:31,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:31,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:31,653 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:31,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 18:30:31,759 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-11-08 18:30:31,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:31,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 18:30:31,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:31,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:33,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037871311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:33,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:33,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2024-11-08 18:30:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840016727] [2024-11-08 18:30:33,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:33,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-08 18:30:33,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-08 18:30:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=6640, Unknown=0, NotChecked=0, Total=7656 [2024-11-08 18:30:33,622 INFO L87 Difference]: Start difference. First operand 268 states and 271 transitions. Second operand has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:39,621 INFO L93 Difference]: Finished difference Result 496 states and 526 transitions. [2024-11-08 18:30:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2024-11-08 18:30:39,621 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-11-08 18:30:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:39,623 INFO L225 Difference]: With dead ends: 496 [2024-11-08 18:30:39,623 INFO L226 Difference]: Without dead ends: 495 [2024-11-08 18:30:39,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16416 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=9399, Invalid=41451, Unknown=0, NotChecked=0, Total=50850 [2024-11-08 18:30:39,630 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1307 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:39,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 114 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:30:39,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-08 18:30:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 484. [2024-11-08 18:30:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 403 states have (on average 1.022332506203474) internal successors, (412), 403 states have internal predecessors, (412), 80 states have call successors, (80), 80 states have call predecessors, (80), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 492 transitions. [2024-11-08 18:30:39,745 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 492 transitions. Word has length 128 [2024-11-08 18:30:39,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:39,746 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 492 transitions. [2024-11-08 18:30:39,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 46 states have internal predecessors, (212), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 492 transitions. [2024-11-08 18:30:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-08 18:30:39,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:39,748 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1] [2024-11-08 18:30:39,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:39,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:39,949 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:39,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:39,950 INFO L85 PathProgramCache]: Analyzing trace with hash 734997364, now seen corresponding path program 3 times [2024-11-08 18:30:39,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598555665] [2024-11-08 18:30:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:41,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:41,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598555665] [2024-11-08 18:30:41,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598555665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:41,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100296887] [2024-11-08 18:30:41,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:30:41,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:41,888 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:41,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 18:30:42,002 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-08 18:30:42,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:42,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-08 18:30:42,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:42,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2054 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:44,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100296887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:44,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:44,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 111 [2024-11-08 18:30:44,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761784784] [2024-11-08 18:30:44,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:44,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-08 18:30:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:44,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-08 18:30:44,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1628, Invalid=10804, Unknown=0, NotChecked=0, Total=12432 [2024-11-08 18:30:44,819 INFO L87 Difference]: Start difference. First operand 484 states and 492 transitions. Second operand has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:30:48,374 INFO L93 Difference]: Finished difference Result 577 states and 591 transitions. [2024-11-08 18:30:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2024-11-08 18:30:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-11-08 18:30:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:30:48,376 INFO L225 Difference]: With dead ends: 577 [2024-11-08 18:30:48,377 INFO L226 Difference]: Without dead ends: 576 [2024-11-08 18:30:48,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11009 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5383, Invalid=31289, Unknown=0, NotChecked=0, Total=36672 [2024-11-08 18:30:48,380 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 786 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:30:48,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 282 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:30:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-08 18:30:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 562. [2024-11-08 18:30:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 468 states have (on average 1.017094017094017) internal successors, (476), 468 states have internal predecessors, (476), 93 states have call successors, (93), 93 states have call predecessors, (93), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 569 transitions. [2024-11-08 18:30:48,468 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 569 transitions. Word has length 164 [2024-11-08 18:30:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:30:48,468 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 569 transitions. [2024-11-08 18:30:48,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 58 states have internal predecessors, (272), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:30:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 569 transitions. [2024-11-08 18:30:48,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-08 18:30:48,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:30:48,473 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 41, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:30:48,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 18:30:48,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:48,674 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:30:48,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:30:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1178058702, now seen corresponding path program 6 times [2024-11-08 18:30:48,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:30:48,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107504339] [2024-11-08 18:30:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:30:48,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:30:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:30:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:30:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107504339] [2024-11-08 18:30:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107504339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:30:52,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321357201] [2024-11-08 18:30:52,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:30:52,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:30:52,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:30:52,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:30:52,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 18:30:53,157 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-11-08 18:30:53,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:30:53,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-08 18:30:53,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:30:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:53,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:30:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 4963 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:30:58,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321357201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:30:58,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:30:58,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 171 [2024-11-08 18:30:58,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840637199] [2024-11-08 18:30:58,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:30:58,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2024-11-08 18:30:58,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:30:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2024-11-08 18:30:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3786, Invalid=25626, Unknown=0, NotChecked=0, Total=29412 [2024-11-08 18:30:58,778 INFO L87 Difference]: Start difference. First operand 562 states and 569 transitions. Second operand has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:31:22,396 INFO L93 Difference]: Finished difference Result 1026 states and 1090 transitions. [2024-11-08 18:31:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 378 states. [2024-11-08 18:31:22,397 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2024-11-08 18:31:22,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:31:22,403 INFO L225 Difference]: With dead ends: 1026 [2024-11-08 18:31:22,403 INFO L226 Difference]: Without dead ends: 1025 [2024-11-08 18:31:22,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70334 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=39019, Invalid=173963, Unknown=0, NotChecked=0, Total=212982 [2024-11-08 18:31:22,416 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 3741 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:31:22,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 169 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:31:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-11-08 18:31:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1006. [2024-11-08 18:31:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 838 states have (on average 1.0202863961813842) internal successors, (855), 838 states have internal predecessors, (855), 167 states have call successors, (167), 167 states have call predecessors, (167), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1022 transitions. [2024-11-08 18:31:22,640 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1022 transitions. Word has length 254 [2024-11-08 18:31:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:31:22,643 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1022 transitions. [2024-11-08 18:31:22,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 169 states have (on average 2.497041420118343) internal successors, (422), 88 states have internal predecessors, (422), 84 states have call successors, (84), 84 states have call predecessors, (84), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:22,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1022 transitions. [2024-11-08 18:31:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-08 18:31:22,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:31:22,654 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 1, 1, 1, 1, 1] [2024-11-08 18:31:22,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 18:31:22,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:22,855 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:31:22,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash 95073512, now seen corresponding path program 4 times [2024-11-08 18:31:22,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:22,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787597008] [2024-11-08 18:31:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:22,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:31:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:30,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:31:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787597008] [2024-11-08 18:31:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787597008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:31:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348547954] [2024-11-08 18:31:30,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:31:30,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:31:30,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:31:30,417 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:31:30,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 18:31:30,672 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:31:30,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:31:30,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-08 18:31:30,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:31:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:31,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:31:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8802 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:31:40,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348547954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:31:40,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:31:40,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112, 112] total 223 [2024-11-08 18:31:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881352449] [2024-11-08 18:31:40,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:31:40,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 224 states [2024-11-08 18:31:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:31:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2024-11-08 18:31:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6388, Invalid=43564, Unknown=0, NotChecked=0, Total=49952 [2024-11-08 18:31:40,297 INFO L87 Difference]: Start difference. First operand 1006 states and 1022 transitions. Second operand has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:53,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:31:53,858 INFO L93 Difference]: Finished difference Result 1177 states and 1205 transitions. [2024-11-08 18:31:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2024-11-08 18:31:53,859 INFO L78 Accepts]: Start accepts. Automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2024-11-08 18:31:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:31:53,863 INFO L225 Difference]: With dead ends: 1177 [2024-11-08 18:31:53,863 INFO L226 Difference]: Without dead ends: 1176 [2024-11-08 18:31:53,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47437 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=21735, Invalid=128421, Unknown=0, NotChecked=0, Total=150156 [2024-11-08 18:31:53,877 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2275 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:31:53,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2275 Valid, 477 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:31:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-08 18:31:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1156. [2024-11-08 18:31:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 963 states have (on average 1.0145379023883696) internal successors, (977), 963 states have internal predecessors, (977), 192 states have call successors, (192), 192 states have call predecessors, (192), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1169 transitions. [2024-11-08 18:31:54,236 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1169 transitions. Word has length 332 [2024-11-08 18:31:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:31:54,237 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1169 transitions. [2024-11-08 18:31:54,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 224 states, 221 states have (on average 2.497737556561086) internal successors, (552), 114 states have internal predecessors, (552), 110 states have call successors, (110), 110 states have call predecessors, (110), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:31:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1169 transitions. [2024-11-08 18:31:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-08 18:31:54,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:31:54,253 INFO L215 NwaCegarLoop]: trace histogram [85, 85, 84, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:31:54,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 18:31:54,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 18:31:54,454 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:31:54,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:31:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1663037353, now seen corresponding path program 7 times [2024-11-08 18:31:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:31:54,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748469418] [2024-11-08 18:31:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:31:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:31:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:11,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:32:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748469418] [2024-11-08 18:32:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748469418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:32:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104111096] [2024-11-08 18:32:11,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:32:11,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:32:11,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:32:11,224 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:32:11,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 18:32:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:32:11,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 172 conjuncts are in the unsatisfiable core [2024-11-08 18:32:11,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:32:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:12,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:32:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21002 backedges. 0 proven. 21002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:32:34,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104111096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:32:34,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:32:34,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172, 172] total 343 [2024-11-08 18:32:34,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151148478] [2024-11-08 18:32:34,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:32:34,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 344 states [2024-11-08 18:32:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:32:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 344 interpolants. [2024-11-08 18:32:34,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14968, Invalid=103024, Unknown=0, NotChecked=0, Total=117992 [2024-11-08 18:32:34,356 INFO L87 Difference]: Start difference. First operand 1156 states and 1169 transitions. Second operand has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:34:24,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:34:24,654 INFO L93 Difference]: Finished difference Result 2054 states and 2180 transitions. [2024-11-08 18:34:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 758 states. [2024-11-08 18:34:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2024-11-08 18:34:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:34:24,667 INFO L225 Difference]: With dead ends: 2054 [2024-11-08 18:34:24,668 INFO L226 Difference]: Without dead ends: 2053 [2024-11-08 18:34:24,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 928 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301376 ImplicationChecksByTransitivity, 114.5s TimeCoverageRelationStatistics Valid=157687, Invalid=706283, Unknown=0, NotChecked=0, Total=863970 [2024-11-08 18:34:24,739 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7091 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7091 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:34:24,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7091 Valid, 167 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 18:34:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2024-11-08 18:34:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2020. [2024-11-08 18:34:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1683 states have (on average 1.0184194890077243) internal successors, (1714), 1683 states have internal predecessors, (1714), 336 states have call successors, (336), 336 states have call predecessors, (336), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:34:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2050 transitions. [2024-11-08 18:34:25,460 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2050 transitions. Word has length 512 [2024-11-08 18:34:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:34:25,463 INFO L471 AbstractCegarLoop]: Abstraction has 2020 states and 2050 transitions. [2024-11-08 18:34:25,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 344 states, 341 states have (on average 2.498533724340176) internal successors, (852), 174 states have internal predecessors, (852), 170 states have call successors, (170), 170 states have call predecessors, (170), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:34:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2050 transitions. [2024-11-08 18:34:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2024-11-08 18:34:25,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:34:25,474 INFO L215 NwaCegarLoop]: trace histogram [111, 111, 111, 110, 110, 110, 1, 1, 1, 1, 1] [2024-11-08 18:34:25,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 18:34:25,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 18:34:25,675 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:34:25,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:34:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1041726416, now seen corresponding path program 5 times [2024-11-08 18:34:25,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:34:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632497360] [2024-11-08 18:34:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:34:25,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:34:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:35:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:35:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632497360] [2024-11-08 18:35:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632497360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:35:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620831415] [2024-11-08 18:35:00,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:35:00,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:35:00,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:35:00,373 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:35:00,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 18:35:03,341 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 111 check-sat command(s) [2024-11-08 18:35:03,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:35:03,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-11-08 18:35:03,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:35:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:04,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:35:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 36410 backedges. 0 proven. 36410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:35:44,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620831415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:35:44,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:35:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224, 224] total 447 [2024-11-08 18:35:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108150680] [2024-11-08 18:35:44,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:35:44,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 448 states [2024-11-08 18:35:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:35:44,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 448 interpolants. [2024-11-08 18:35:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25316, Invalid=174940, Unknown=0, NotChecked=0, Total=200256 [2024-11-08 18:35:44,762 INFO L87 Difference]: Start difference. First operand 2020 states and 2050 transitions. Second operand has 448 states, 445 states have (on average 2.498876404494382) internal successors, (1112), 226 states have internal predecessors, (1112), 222 states have call successors, (222), 222 states have call predecessors, (222), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:36:51,398 INFO L93 Difference]: Finished difference Result 2373 states and 2429 transitions. [2024-11-08 18:36:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 557 states. [2024-11-08 18:36:51,400 INFO L78 Accepts]: Start accepts. Automaton has has 448 states, 445 states have (on average 2.498876404494382) internal successors, (1112), 226 states have internal predecessors, (1112), 222 states have call successors, (222), 222 states have call predecessors, (222), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 668 [2024-11-08 18:36:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:36:51,411 INFO L225 Difference]: With dead ends: 2373 [2024-11-08 18:36:51,411 INFO L226 Difference]: Without dead ends: 2372 [2024-11-08 18:36:51,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1890 GetRequests, 1112 SyntacticMatches, 0 SemanticMatches, 778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196733 ImplicationChecksByTransitivity, 107.2s TimeCoverageRelationStatistics Valid=87367, Invalid=520253, Unknown=0, NotChecked=0, Total=607620 [2024-11-08 18:36:51,438 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5004 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5004 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:36:51,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5004 Valid, 812 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 18:36:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2024-11-08 18:36:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2338. [2024-11-08 18:36:51,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1948 states have (on average 1.0143737166324436) internal successors, (1976), 1948 states have internal predecessors, (1976), 389 states have call successors, (389), 389 states have call predecessors, (389), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2365 transitions. [2024-11-08 18:36:51,958 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2365 transitions. Word has length 668 [2024-11-08 18:36:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:36:51,960 INFO L471 AbstractCegarLoop]: Abstraction has 2338 states and 2365 transitions. [2024-11-08 18:36:51,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 448 states, 445 states have (on average 2.498876404494382) internal successors, (1112), 226 states have internal predecessors, (1112), 222 states have call successors, (222), 222 states have call predecessors, (222), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:36:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2365 transitions. [2024-11-08 18:36:51,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2024-11-08 18:36:51,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:36:51,977 INFO L215 NwaCegarLoop]: trace histogram [170, 170, 169, 168, 168, 168, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:36:52,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 18:36:52,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 18:36:52,178 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 18:36:52,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:36:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash 484998478, now seen corresponding path program 8 times [2024-11-08 18:36:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:36:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679403431] [2024-11-08 18:36:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:36:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:36:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:38:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 85347 backedges. 0 proven. 85347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:38:19,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:38:19,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679403431] [2024-11-08 18:38:19,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679403431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:38:19,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808946959] [2024-11-08 18:38:19,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:38:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:38:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:38:19,538 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:38:19,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c01fb995-19e4-494f-a7e6-50db2a224a03/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 18:38:20,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:38:20,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:38:20,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 2389 conjuncts, 342 conjuncts are in the unsatisfiable core [2024-11-08 18:38:20,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:38:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 85347 backedges. 0 proven. 85347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:38:21,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:39:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 85347 backedges. 0 proven. 85347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:39:55,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808946959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:39:55,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:39:55,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [342, 342, 342] total 683 [2024-11-08 18:39:55,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466952930] [2024-11-08 18:39:55,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:39:55,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 684 states [2024-11-08 18:39:55,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:39:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 684 interpolants. [2024-11-08 18:39:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58826, Invalid=408346, Unknown=0, NotChecked=0, Total=467172 [2024-11-08 18:39:55,685 INFO L87 Difference]: Start difference. First operand 2338 states and 2365 transitions. Second operand has 684 states, 681 states have (on average 2.499265785609398) internal successors, (1702), 344 states have internal predecessors, (1702), 340 states have call successors, (340), 340 states have call predecessors, (340), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)