./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Primes.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Primes.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:50:09,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:50:09,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:50:09,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:50:09,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:50:09,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:50:09,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:50:09,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:50:09,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:50:09,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:50:09,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:50:09,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:50:09,924 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:50:09,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:50:09,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:50:09,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:50:09,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:50:09,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:50:09,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:50:09,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:50:09,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:50:09,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:50:09,931 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:50:09,931 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:50:09,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:50:09,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:50:09,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:50:09,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:50:09,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:50:09,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:50:09,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:09,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:50:09,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:50:09,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:50:09,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:50:09,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:50:09,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:50:09,938 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:50:09,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:50:09,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:50:09,938 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:50:09,939 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_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2023-11-19 07:50:10,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:50:10,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:50:10,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:50:10,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:50:10,308 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:50:10,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursive/Primes.c [2023-11-19 07:50:13,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:50:13,704 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:50:13,705 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/sv-benchmarks/c/recursive/Primes.c [2023-11-19 07:50:13,716 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/data/616dfc966/f8a5bb0a61bb4b658a5368e357497550/FLAG0bc153c21 [2023-11-19 07:50:13,737 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/data/616dfc966/f8a5bb0a61bb4b658a5368e357497550 [2023-11-19 07:50:13,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:50:13,745 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:50:13,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:13,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:50:13,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:50:13,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:13" (1/1) ... [2023-11-19 07:50:13,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14757c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:13, skipping insertion in model container [2023-11-19 07:50:13,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:13" (1/1) ... [2023-11-19 07:50:13,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:50:14,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:14,038 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:50:14,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:50:14,086 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:50:14,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14 WrapperNode [2023-11-19 07:50:14,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:50:14,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:14,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:50:14,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:50:14,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,140 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-19 07:50:14,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:50:14,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:50:14,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:50:14,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:50:14,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:50:14,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:50:14,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:50:14,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:50:14,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (1/1) ... [2023-11-19 07:50:14,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:50:14,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:14,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:50:14,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:50:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2023-11-19 07:50:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2023-11-19 07:50:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:50:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-11-19 07:50:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-11-19 07:50:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2023-11-19 07:50:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2023-11-19 07:50:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:50:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:50:14,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:50:14,349 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:50:14,352 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:50:14,702 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:50:14,716 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:50:14,716 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:50:14,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:14 BoogieIcfgContainer [2023-11-19 07:50:14,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:50:14,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:50:14,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:50:14,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:50:14,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:13" (1/3) ... [2023-11-19 07:50:14,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce65c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:14, skipping insertion in model container [2023-11-19 07:50:14,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:14" (2/3) ... [2023-11-19 07:50:14,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce65c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:14, skipping insertion in model container [2023-11-19 07:50:14,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:14" (3/3) ... [2023-11-19 07:50:14,732 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2023-11-19 07:50:14,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:50:14,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:50:14,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:50:14,820 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16c544c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:50:14,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:50:14,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 55 states have (on average 1.6) internal successors, (88), 71 states have internal predecessors, (88), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:50:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:50:14,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:14,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:50:14,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:14,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2957412, now seen corresponding path program 1 times [2023-11-19 07:50:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:14,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666967624] [2023-11-19 07:50:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:15,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666967624] [2023-11-19 07:50:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666967624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:15,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:15,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792394532] [2023-11-19 07:50:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:15,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:15,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,143 INFO L87 Difference]: Start difference. First operand has 84 states, 55 states have (on average 1.6) internal successors, (88), 71 states have internal predecessors, (88), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,190 INFO L93 Difference]: Finished difference Result 87 states and 108 transitions. [2023-11-19 07:50:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:15,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 07:50:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,203 INFO L225 Difference]: With dead ends: 87 [2023-11-19 07:50:15,204 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:50:15,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,211 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 4 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 196 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:15,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:50:15,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-19 07:50:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 64 states have internal predecessors, (76), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:50:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2023-11-19 07:50:15,261 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 4 [2023-11-19 07:50:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,262 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2023-11-19 07:50:15,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2023-11-19 07:50:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:50:15,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:50:15,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:50:15,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:15,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,265 INFO L85 PathProgramCache]: Analyzing trace with hash 91679879, now seen corresponding path program 1 times [2023-11-19 07:50:15,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373741891] [2023-11-19 07:50:15,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:15,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:15,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373741891] [2023-11-19 07:50:15,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373741891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:15,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:15,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:15,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568671203] [2023-11-19 07:50:15,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:15,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:15,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:15,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:15,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,353 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,372 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2023-11-19 07:50:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:15,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 07:50:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,375 INFO L225 Difference]: With dead ends: 76 [2023-11-19 07:50:15,375 INFO L226 Difference]: Without dead ends: 75 [2023-11-19 07:50:15,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,377 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 2 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 176 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-19 07:50:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-19 07:50:15,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.530612244897959) internal successors, (75), 63 states have internal predecessors, (75), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:50:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2023-11-19 07:50:15,393 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 5 [2023-11-19 07:50:15,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,393 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2023-11-19 07:50:15,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2023-11-19 07:50:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 07:50:15,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:15,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:50:15,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:15,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1192796019, now seen corresponding path program 1 times [2023-11-19 07:50:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948068172] [2023-11-19 07:50:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:15,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948068172] [2023-11-19 07:50:15,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948068172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:15,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425165369] [2023-11-19 07:50:15,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:15,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:15,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,483 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,532 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2023-11-19 07:50:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:15,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 07:50:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,539 INFO L225 Difference]: With dead ends: 77 [2023-11-19 07:50:15,539 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:50:15,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,542 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 5 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:50:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-11-19 07:50:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.510204081632653) internal successors, (74), 62 states have internal predecessors, (74), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:50:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2023-11-19 07:50:15,573 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 15 [2023-11-19 07:50:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,573 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2023-11-19 07:50:15,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2023-11-19 07:50:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:50:15,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:15,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:50:15,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:15,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1678029112, now seen corresponding path program 1 times [2023-11-19 07:50:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376238017] [2023-11-19 07:50:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:15,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:15,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376238017] [2023-11-19 07:50:15,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376238017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:15,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:15,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106548957] [2023-11-19 07:50:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:15,681 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-19 07:50:15,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,781 INFO L93 Difference]: Finished difference Result 138 states and 177 transitions. [2023-11-19 07:50:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:15,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 16 [2023-11-19 07:50:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,783 INFO L225 Difference]: With dead ends: 138 [2023-11-19 07:50:15,784 INFO L226 Difference]: Without dead ends: 70 [2023-11-19 07:50:15,786 INFO L412 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 [2023-11-19 07:50:15,788 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 43 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 249 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-19 07:50:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-11-19 07:50:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:50:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-11-19 07:50:15,800 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 16 [2023-11-19 07:50:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,801 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-11-19 07:50:15,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-19 07:50:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-11-19 07:50:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:50:15,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:15,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:50:15,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:15,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1678036095, now seen corresponding path program 1 times [2023-11-19 07:50:15,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949594844] [2023-11-19 07:50:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949594844] [2023-11-19 07:50:15,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949594844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:15,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:15,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:15,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030083703] [2023-11-19 07:50:15,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:15,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:15,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:15,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:15,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,863 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:15,909 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2023-11-19 07:50:15,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:15,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 16 [2023-11-19 07:50:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:15,914 INFO L225 Difference]: With dead ends: 70 [2023-11-19 07:50:15,914 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 07:50:15,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:15,920 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:15,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 151 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 07:50:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2023-11-19 07:50:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.434782608695652) internal successors, (66), 56 states have internal predecessors, (66), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:50:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2023-11-19 07:50:15,945 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 16 [2023-11-19 07:50:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:15,946 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2023-11-19 07:50:15,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2023-11-19 07:50:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 07:50:15,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:15,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:15,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:50:15,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:15,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash 479511440, now seen corresponding path program 1 times [2023-11-19 07:50:15,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:15,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659633713] [2023-11-19 07:50:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:16,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:16,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659633713] [2023-11-19 07:50:16,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659633713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:16,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:16,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:16,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863057871] [2023-11-19 07:50:16,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:16,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:16,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:16,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:16,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:16,025 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-19 07:50:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:16,100 INFO L93 Difference]: Finished difference Result 143 states and 176 transitions. [2023-11-19 07:50:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:50:16,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 17 [2023-11-19 07:50:16,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:16,103 INFO L225 Difference]: With dead ends: 143 [2023-11-19 07:50:16,103 INFO L226 Difference]: Without dead ends: 82 [2023-11-19 07:50:16,105 INFO L412 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 [2023-11-19 07:50:16,106 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 31 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:16,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 271 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-19 07:50:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2023-11-19 07:50:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.4) internal successors, (77), 65 states have internal predecessors, (77), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:50:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2023-11-19 07:50:16,118 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 17 [2023-11-19 07:50:16,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:16,118 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2023-11-19 07:50:16,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-19 07:50:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2023-11-19 07:50:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 07:50:16,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:16,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:16,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:50:16,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:16,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1980170339, now seen corresponding path program 1 times [2023-11-19 07:50:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:16,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61935646] [2023-11-19 07:50:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:16,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:16,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:16,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61935646] [2023-11-19 07:50:16,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61935646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:16,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:16,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:16,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860963418] [2023-11-19 07:50:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:16,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:16,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:16,243 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-19 07:50:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:16,356 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2023-11-19 07:50:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:50:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 18 [2023-11-19 07:50:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:16,359 INFO L225 Difference]: With dead ends: 80 [2023-11-19 07:50:16,359 INFO L226 Difference]: Without dead ends: 79 [2023-11-19 07:50:16,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:16,360 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 44 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:16,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 273 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-19 07:50:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-11-19 07:50:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 65 states have internal predecessors, (76), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:50:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2023-11-19 07:50:16,371 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 18 [2023-11-19 07:50:16,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:16,372 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2023-11-19 07:50:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-19 07:50:16,372 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2023-11-19 07:50:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:50:16,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:16,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:16,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:50:16,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:16,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash 848744867, now seen corresponding path program 1 times [2023-11-19 07:50:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:16,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665559216] [2023-11-19 07:50:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:16,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:16,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665559216] [2023-11-19 07:50:16,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665559216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:16,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:16,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:50:16,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659285167] [2023-11-19 07:50:16,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:16,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:50:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:50:16,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:16,500 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:16,541 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2023-11-19 07:50:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:50:16,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-19 07:50:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:16,543 INFO L225 Difference]: With dead ends: 80 [2023-11-19 07:50:16,543 INFO L226 Difference]: Without dead ends: 79 [2023-11-19 07:50:16,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:50:16,545 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:16,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 145 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:16,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-19 07:50:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2023-11-19 07:50:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 64 states have internal predecessors, (75), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:50:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2023-11-19 07:50:16,557 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 19 [2023-11-19 07:50:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:16,558 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2023-11-19 07:50:16,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2023-11-19 07:50:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:50:16,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:16,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:16,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:50:16,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:16,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1255738427, now seen corresponding path program 1 times [2023-11-19 07:50:16,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:16,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710506474] [2023-11-19 07:50:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:16,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:16,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710506474] [2023-11-19 07:50:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710506474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:16,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:16,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:50:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807152158] [2023-11-19 07:50:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:16,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:50:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:50:16,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:16,660 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-19 07:50:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:16,811 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2023-11-19 07:50:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:50:16,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 19 [2023-11-19 07:50:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:16,815 INFO L225 Difference]: With dead ends: 104 [2023-11-19 07:50:16,815 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 07:50:16,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:16,823 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 41 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:16,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 299 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 07:50:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2023-11-19 07:50:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.3466666666666667) internal successors, (101), 84 states have internal predecessors, (101), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:50:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2023-11-19 07:50:16,855 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 19 [2023-11-19 07:50:16,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:16,855 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2023-11-19 07:50:16,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-19 07:50:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2023-11-19 07:50:16,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 07:50:16,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:16,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:16,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:50:16,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:16,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:16,870 INFO L85 PathProgramCache]: Analyzing trace with hash 541287174, now seen corresponding path program 1 times [2023-11-19 07:50:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:16,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354673031] [2023-11-19 07:50:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:16,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:17,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:17,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354673031] [2023-11-19 07:50:17,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354673031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:17,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:17,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:50:17,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981951985] [2023-11-19 07:50:17,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:17,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:50:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:17,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:50:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:17,044 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:17,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:17,106 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2023-11-19 07:50:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:50:17,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-19 07:50:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:17,111 INFO L225 Difference]: With dead ends: 133 [2023-11-19 07:50:17,111 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 07:50:17,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:50:17,112 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 4 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:17,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 453 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 07:50:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2023-11-19 07:50:17,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.32) internal successors, (99), 84 states have internal predecessors, (99), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:50:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2023-11-19 07:50:17,123 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 20 [2023-11-19 07:50:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:17,124 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2023-11-19 07:50:17,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2023-11-19 07:50:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:50:17,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:17,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:17,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:50:17,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:17,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:17,126 INFO L85 PathProgramCache]: Analyzing trace with hash 614805462, now seen corresponding path program 1 times [2023-11-19 07:50:17,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:17,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676707699] [2023-11-19 07:50:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:17,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:17,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676707699] [2023-11-19 07:50:17,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676707699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:17,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:17,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:17,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178250025] [2023-11-19 07:50:17,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:17,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:17,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:17,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:17,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:17,196 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:17,254 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2023-11-19 07:50:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:17,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-19 07:50:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:17,256 INFO L225 Difference]: With dead ends: 140 [2023-11-19 07:50:17,257 INFO L226 Difference]: Without dead ends: 117 [2023-11-19 07:50:17,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:17,259 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 28 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:17,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 289 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-19 07:50:17,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2023-11-19 07:50:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 92 states have internal predecessors, (110), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:50:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2023-11-19 07:50:17,274 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 21 [2023-11-19 07:50:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:17,274 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2023-11-19 07:50:17,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2023-11-19 07:50:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:50:17,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:17,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:17,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:50:17,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:17,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1870691775, now seen corresponding path program 1 times [2023-11-19 07:50:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:17,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124172205] [2023-11-19 07:50:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:17,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124172205] [2023-11-19 07:50:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124172205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:17,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180029309] [2023-11-19 07:50:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:17,347 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:17,416 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2023-11-19 07:50:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:17,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-19 07:50:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:17,418 INFO L225 Difference]: With dead ends: 135 [2023-11-19 07:50:17,419 INFO L226 Difference]: Without dead ends: 134 [2023-11-19 07:50:17,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:50:17,420 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 40 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:17,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 261 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-19 07:50:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2023-11-19 07:50:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 105 states have internal predecessors, (129), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:50:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 158 transitions. [2023-11-19 07:50:17,432 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 158 transitions. Word has length 23 [2023-11-19 07:50:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:17,432 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 158 transitions. [2023-11-19 07:50:17,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 158 transitions. [2023-11-19 07:50:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:50:17,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:17,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:17,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:50:17,434 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:17,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash 771635278, now seen corresponding path program 1 times [2023-11-19 07:50:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:17,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681827804] [2023-11-19 07:50:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:17,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:17,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681827804] [2023-11-19 07:50:17,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681827804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:17,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275732405] [2023-11-19 07:50:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:17,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:17,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:17,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:17,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:50:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:17,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:50:17,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:17,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275732405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:18,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:18,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 23 [2023-11-19 07:50:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157203139] [2023-11-19 07:50:18,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:18,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:50:18,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:18,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:50:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:50:18,057 INFO L87 Difference]: Start difference. First operand 128 states and 158 transitions. Second operand has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:18,710 INFO L93 Difference]: Finished difference Result 273 states and 345 transitions. [2023-11-19 07:50:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:50:18,711 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-19 07:50:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:18,713 INFO L225 Difference]: With dead ends: 273 [2023-11-19 07:50:18,713 INFO L226 Difference]: Without dead ends: 165 [2023-11-19 07:50:18,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 07:50:18,715 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 197 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:18,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 839 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:50:18,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-19 07:50:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 153. [2023-11-19 07:50:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 118 states have (on average 1.2966101694915255) internal successors, (153), 125 states have internal predecessors, (153), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:50:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 188 transitions. [2023-11-19 07:50:18,739 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 188 transitions. Word has length 25 [2023-11-19 07:50:18,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:18,740 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 188 transitions. [2023-11-19 07:50:18,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 188 transitions. [2023-11-19 07:50:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:50:18,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:18,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:18,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:18,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:50:18,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:18,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1481094791, now seen corresponding path program 1 times [2023-11-19 07:50:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564199090] [2023-11-19 07:50:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:50:19,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564199090] [2023-11-19 07:50:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564199090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151193040] [2023-11-19 07:50:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:19,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:19,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:19,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:50:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:19,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:50:19,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:19,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:19,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151193040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:19,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:19,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2023-11-19 07:50:19,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029226194] [2023-11-19 07:50:19,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:19,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:50:19,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:50:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:19,300 INFO L87 Difference]: Start difference. First operand 153 states and 188 transitions. Second operand has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:19,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:19,539 INFO L93 Difference]: Finished difference Result 254 states and 312 transitions. [2023-11-19 07:50:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:50:19,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-19 07:50:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:19,542 INFO L225 Difference]: With dead ends: 254 [2023-11-19 07:50:19,542 INFO L226 Difference]: Without dead ends: 198 [2023-11-19 07:50:19,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:50:19,544 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 73 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:19,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 344 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-19 07:50:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2023-11-19 07:50:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 151 states have (on average 1.271523178807947) internal successors, (192), 158 states have internal predecessors, (192), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:50:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 237 transitions. [2023-11-19 07:50:19,563 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 237 transitions. Word has length 27 [2023-11-19 07:50:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:19,563 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 237 transitions. [2023-11-19 07:50:19,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 237 transitions. [2023-11-19 07:50:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:50:19,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:19,565 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:19,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:50:19,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:50:19,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:19,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash 903106936, now seen corresponding path program 1 times [2023-11-19 07:50:19,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:19,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696027232] [2023-11-19 07:50:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:19,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:19,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696027232] [2023-11-19 07:50:19,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696027232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:19,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:50:19,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:50:19,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076135349] [2023-11-19 07:50:19,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:19,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:50:19,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:19,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:50:19,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:50:19,840 INFO L87 Difference]: Start difference. First operand 194 states and 237 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:19,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:19,915 INFO L93 Difference]: Finished difference Result 220 states and 272 transitions. [2023-11-19 07:50:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:50:19,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 07:50:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:19,918 INFO L225 Difference]: With dead ends: 220 [2023-11-19 07:50:19,919 INFO L226 Difference]: Without dead ends: 218 [2023-11-19 07:50:19,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:50:19,921 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 35 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:19,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 254 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-19 07:50:19,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 209. [2023-11-19 07:50:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 164 states have (on average 1.2682926829268293) internal successors, (208), 170 states have internal predecessors, (208), 25 states have call successors, (25), 14 states have call predecessors, (25), 13 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:50:19,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 257 transitions. [2023-11-19 07:50:19,942 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 257 transitions. Word has length 28 [2023-11-19 07:50:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:19,943 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 257 transitions. [2023-11-19 07:50:19,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:19,943 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 257 transitions. [2023-11-19 07:50:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:50:19,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:19,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:19,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:50:19,944 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:19,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 992212682, now seen corresponding path program 1 times [2023-11-19 07:50:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66623857] [2023-11-19 07:50:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:50:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:20,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:20,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66623857] [2023-11-19 07:50:20,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66623857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:20,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094156418] [2023-11-19 07:50:20,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:20,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:20,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:20,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:20,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:50:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:50:20,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094156418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:20,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:20,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-11-19 07:50:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770305742] [2023-11-19 07:50:20,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:20,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 07:50:20,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 07:50:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:50:20,255 INFO L87 Difference]: Start difference. First operand 209 states and 257 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:50:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:20,475 INFO L93 Difference]: Finished difference Result 252 states and 322 transitions. [2023-11-19 07:50:20,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:50:20,476 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2023-11-19 07:50:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:20,478 INFO L225 Difference]: With dead ends: 252 [2023-11-19 07:50:20,478 INFO L226 Difference]: Without dead ends: 207 [2023-11-19 07:50:20,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:50:20,480 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 106 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:20,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 558 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:20,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-19 07:50:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 196. [2023-11-19 07:50:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 155 states have (on average 1.2258064516129032) internal successors, (190), 161 states have internal predecessors, (190), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:50:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 234 transitions. [2023-11-19 07:50:20,502 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 234 transitions. Word has length 31 [2023-11-19 07:50:20,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:20,502 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 234 transitions. [2023-11-19 07:50:20,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 6 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 07:50:20,503 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 234 transitions. [2023-11-19 07:50:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:50:20,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:20,504 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:20,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:20,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:50:20,724 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:20,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:20,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1575435679, now seen corresponding path program 1 times [2023-11-19 07:50:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:20,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11509831] [2023-11-19 07:50:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:20,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11509831] [2023-11-19 07:50:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11509831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964784938] [2023-11-19 07:50:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:20,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:20,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:20,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:20,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:50:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:20,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:20,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:20,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:50:21,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964784938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:21,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:21,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2023-11-19 07:50:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852817635] [2023-11-19 07:50:21,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:50:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:50:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:50:21,005 INFO L87 Difference]: Start difference. First operand 196 states and 234 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 7 states have internal predecessors, (42), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:21,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:21,082 INFO L93 Difference]: Finished difference Result 201 states and 237 transitions. [2023-11-19 07:50:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:50:21,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 7 states have internal predecessors, (42), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2023-11-19 07:50:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:21,085 INFO L225 Difference]: With dead ends: 201 [2023-11-19 07:50:21,085 INFO L226 Difference]: Without dead ends: 171 [2023-11-19 07:50:21,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:21,086 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 39 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:21,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 446 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:21,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-19 07:50:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2023-11-19 07:50:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 07:50:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 201 transitions. [2023-11-19 07:50:21,104 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 201 transitions. Word has length 33 [2023-11-19 07:50:21,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:21,105 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 201 transitions. [2023-11-19 07:50:21,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 7 states have internal predecessors, (42), 6 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:50:21,105 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 201 transitions. [2023-11-19 07:50:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:50:21,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:21,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:21,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:21,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:50:21,323 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:21,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:21,323 INFO L85 PathProgramCache]: Analyzing trace with hash 500890758, now seen corresponding path program 1 times [2023-11-19 07:50:21,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:21,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008905967] [2023-11-19 07:50:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:50:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:21,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:21,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008905967] [2023-11-19 07:50:21,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008905967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221558336] [2023-11-19 07:50:21,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:21,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:21,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:21,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:50:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:21,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:50:21,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:21,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:21,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221558336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:21,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:21,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:50:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135717614] [2023-11-19 07:50:21,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:50:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:50:21,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:21,611 INFO L87 Difference]: Start difference. First operand 170 states and 201 transitions. Second operand has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:50:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:21,678 INFO L93 Difference]: Finished difference Result 179 states and 211 transitions. [2023-11-19 07:50:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:50:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2023-11-19 07:50:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:21,681 INFO L225 Difference]: With dead ends: 179 [2023-11-19 07:50:21,681 INFO L226 Difference]: Without dead ends: 175 [2023-11-19 07:50:21,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:50:21,682 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 48 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:21,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 353 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:50:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-19 07:50:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-19 07:50:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-19 07:50:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2023-11-19 07:50:21,695 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 33 [2023-11-19 07:50:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:21,696 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2023-11-19 07:50:21,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 07:50:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2023-11-19 07:50:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:50:21,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:21,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:21,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:21,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:50:21,916 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:21,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1673059225, now seen corresponding path program 1 times [2023-11-19 07:50:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114254799] [2023-11-19 07:50:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:22,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:22,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114254799] [2023-11-19 07:50:22,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114254799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:22,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182052704] [2023-11-19 07:50:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:22,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:22,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:22,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:22,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:50:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:22,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:50:22,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:22,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:22,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182052704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:22,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:22,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2023-11-19 07:50:22,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565823155] [2023-11-19 07:50:22,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:22,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:50:22,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:50:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:50:22,550 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 11 states have internal predecessors, (50), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:22,917 INFO L93 Difference]: Finished difference Result 302 states and 357 transitions. [2023-11-19 07:50:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:50:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 11 states have internal predecessors, (50), 7 states have call successors, (8), 7 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 34 [2023-11-19 07:50:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:22,919 INFO L225 Difference]: With dead ends: 302 [2023-11-19 07:50:22,920 INFO L226 Difference]: Without dead ends: 162 [2023-11-19 07:50:22,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:50:22,921 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 118 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:22,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 553 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:50:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-19 07:50:22,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2023-11-19 07:50:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 125 states have internal predecessors, (142), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 16 states have call successors, (17) [2023-11-19 07:50:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 176 transitions. [2023-11-19 07:50:22,935 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 176 transitions. Word has length 34 [2023-11-19 07:50:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:22,936 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 176 transitions. [2023-11-19 07:50:22,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 11 states have internal predecessors, (50), 7 states have call successors, (8), 7 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 176 transitions. [2023-11-19 07:50:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:50:22,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:22,937 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:22,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:23,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,151 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:23,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash -538547935, now seen corresponding path program 1 times [2023-11-19 07:50:23,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:23,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193530876] [2023-11-19 07:50:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:50:23,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:23,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193530876] [2023-11-19 07:50:23,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193530876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434741875] [2023-11-19 07:50:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:23,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:23,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:50:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:50:23,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:50:23,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:50:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434741875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:23,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:50:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017065705] [2023-11-19 07:50:23,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:23,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:23,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:50:23,322 INFO L87 Difference]: Start difference. First operand 154 states and 176 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:23,420 INFO L93 Difference]: Finished difference Result 295 states and 353 transitions. [2023-11-19 07:50:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:50:23,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-19 07:50:23,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:23,423 INFO L225 Difference]: With dead ends: 295 [2023-11-19 07:50:23,423 INFO L226 Difference]: Without dead ends: 175 [2023-11-19 07:50:23,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:50:23,425 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 35 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:23,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 391 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-19 07:50:23,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 165. [2023-11-19 07:50:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 131 states have (on average 1.16793893129771) internal successors, (153), 134 states have internal predecessors, (153), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-19 07:50:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 189 transitions. [2023-11-19 07:50:23,443 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 189 transitions. Word has length 39 [2023-11-19 07:50:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:23,444 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 189 transitions. [2023-11-19 07:50:23,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:23,444 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 189 transitions. [2023-11-19 07:50:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 07:50:23,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:23,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:23,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:23,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,665 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting multiple_ofErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:23,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash 485100786, now seen corresponding path program 1 times [2023-11-19 07:50:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:23,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274658422] [2023-11-19 07:50:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:23,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274658422] [2023-11-19 07:50:23,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274658422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703963572] [2023-11-19 07:50:23,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:23,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:23,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:23,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:23,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:50:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:23,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:50:23,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:50:24,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703963572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:24,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-11-19 07:50:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998292665] [2023-11-19 07:50:24,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:24,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:50:24,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:50:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:50:24,121 INFO L87 Difference]: Start difference. First operand 165 states and 189 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2023-11-19 07:50:24,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:24,306 INFO L93 Difference]: Finished difference Result 171 states and 195 transitions. [2023-11-19 07:50:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:50:24,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) Word has length 40 [2023-11-19 07:50:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:24,308 INFO L225 Difference]: With dead ends: 171 [2023-11-19 07:50:24,308 INFO L226 Difference]: Without dead ends: 170 [2023-11-19 07:50:24,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:50:24,309 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 72 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:24,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 279 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:24,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-19 07:50:24,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2023-11-19 07:50:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 134 states have internal predecessors, (152), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-19 07:50:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2023-11-19 07:50:24,322 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 40 [2023-11-19 07:50:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:24,323 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2023-11-19 07:50:24,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2023-11-19 07:50:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2023-11-19 07:50:24,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 07:50:24,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:24,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:24,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:24,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-19 07:50:24,538 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:24,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:24,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2141744756, now seen corresponding path program 1 times [2023-11-19 07:50:24,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:24,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190604178] [2023-11-19 07:50:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:50:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190604178] [2023-11-19 07:50:24,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190604178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958980794] [2023-11-19 07:50:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:24,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:24,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:24,636 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:24,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:50:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:24,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:50:24,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:50:24,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:50:24,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958980794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:50:24,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:50:24,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2023-11-19 07:50:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942099] [2023-11-19 07:50:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:50:24,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:50:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:50:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:50:24,821 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 8 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-19 07:50:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:24,976 INFO L93 Difference]: Finished difference Result 191 states and 219 transitions. [2023-11-19 07:50:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:50:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) Word has length 41 [2023-11-19 07:50:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:24,978 INFO L225 Difference]: With dead ends: 191 [2023-11-19 07:50:24,978 INFO L226 Difference]: Without dead ends: 190 [2023-11-19 07:50:24,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:50:24,981 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 85 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:24,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 200 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-19 07:50:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 180. [2023-11-19 07:50:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 143 states have (on average 1.167832167832168) internal successors, (167), 146 states have internal predecessors, (167), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (20), 20 states have call predecessors, (20), 19 states have call successors, (20) [2023-11-19 07:50:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 207 transitions. [2023-11-19 07:50:25,000 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 207 transitions. Word has length 41 [2023-11-19 07:50:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:25,001 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 207 transitions. [2023-11-19 07:50:25,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-19 07:50:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 207 transitions. [2023-11-19 07:50:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:50:25,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:25,002 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:25,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:25,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 07:50:25,219 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:25,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:25,219 INFO L85 PathProgramCache]: Analyzing trace with hash 788683582, now seen corresponding path program 1 times [2023-11-19 07:50:25,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:25,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349780526] [2023-11-19 07:50:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:50:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:25,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349780526] [2023-11-19 07:50:25,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349780526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:25,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866483982] [2023-11-19 07:50:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:25,474 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:25,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:50:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:25,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:50:25,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:25,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:50:25,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866483982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:25,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:25,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-19 07:50:25,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683315803] [2023-11-19 07:50:25,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:25,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:50:25,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:50:25,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:50:25,898 INFO L87 Difference]: Start difference. First operand 180 states and 207 transitions. Second operand has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-19 07:50:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:26,096 INFO L93 Difference]: Finished difference Result 197 states and 227 transitions. [2023-11-19 07:50:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:50:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 45 [2023-11-19 07:50:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:26,098 INFO L225 Difference]: With dead ends: 197 [2023-11-19 07:50:26,098 INFO L226 Difference]: Without dead ends: 190 [2023-11-19 07:50:26,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:50:26,100 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 80 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:26,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 924 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:50:26,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-19 07:50:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-19 07:50:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 151 states have (on average 1.1589403973509933) internal successors, (175), 154 states have internal predecessors, (175), 20 states have call successors, (20), 13 states have call predecessors, (20), 15 states have return successors, (22), 22 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-19 07:50:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2023-11-19 07:50:26,115 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 45 [2023-11-19 07:50:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:26,116 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2023-11-19 07:50:26,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 18 states have internal predecessors, (72), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2023-11-19 07:50:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2023-11-19 07:50:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:50:26,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:26,117 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:26,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:26,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 07:50:26,331 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting multiple_ofErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:26,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:26,331 INFO L85 PathProgramCache]: Analyzing trace with hash 647871711, now seen corresponding path program 2 times [2023-11-19 07:50:26,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:26,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820926440] [2023-11-19 07:50:26,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:26,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:26,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820926440] [2023-11-19 07:50:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820926440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19114203] [2023-11-19 07:50:26,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:26,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:26,574 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:26,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:50:26,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:50:26,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:26,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:50:26,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:50:26,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 07:50:27,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19114203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:27,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:27,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-11-19 07:50:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129113846] [2023-11-19 07:50:27,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:27,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-19 07:50:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-19 07:50:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:50:27,273 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand has 34 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 20 states have internal predecessors, (101), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:30,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:30,476 INFO L93 Difference]: Finished difference Result 325 states and 384 transitions. [2023-11-19 07:50:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-19 07:50:30,476 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 20 states have internal predecessors, (101), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-11-19 07:50:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:30,479 INFO L225 Difference]: With dead ends: 325 [2023-11-19 07:50:30,479 INFO L226 Difference]: Without dead ends: 323 [2023-11-19 07:50:30,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1376, Invalid=6280, Unknown=0, NotChecked=0, Total=7656 [2023-11-19 07:50:30,485 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 572 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:30,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1184 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:50:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-19 07:50:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 296. [2023-11-19 07:50:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 238 states have (on average 1.1218487394957983) internal successors, (267), 239 states have internal predecessors, (267), 33 states have call successors, (33), 21 states have call predecessors, (33), 23 states have return successors, (35), 35 states have call predecessors, (35), 32 states have call successors, (35) [2023-11-19 07:50:30,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 335 transitions. [2023-11-19 07:50:30,514 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 335 transitions. Word has length 47 [2023-11-19 07:50:30,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:30,515 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 335 transitions. [2023-11-19 07:50:30,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 20 states have internal predecessors, (101), 16 states have call successors, (16), 14 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:50:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 335 transitions. [2023-11-19 07:50:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:50:30,516 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:30,517 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:30,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:30,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:50:30,738 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:30,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:30,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1842752318, now seen corresponding path program 2 times [2023-11-19 07:50:30,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:30,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492264534] [2023-11-19 07:50:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:30,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 07:50:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:50:31,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:31,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492264534] [2023-11-19 07:50:31,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492264534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:31,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309107130] [2023-11-19 07:50:31,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:50:31,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:31,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:31,191 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:31,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:50:31,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:50:31,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:31,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:50:31,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:50:31,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 6 proven. 76 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:50:32,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309107130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:32,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 31 [2023-11-19 07:50:32,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118558323] [2023-11-19 07:50:32,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:32,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 07:50:32,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 07:50:32,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:50:32,435 INFO L87 Difference]: Start difference. First operand 296 states and 335 transitions. Second operand has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-19 07:50:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:32,943 INFO L93 Difference]: Finished difference Result 329 states and 375 transitions. [2023-11-19 07:50:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:50:32,943 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) Word has length 69 [2023-11-19 07:50:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:32,946 INFO L225 Difference]: With dead ends: 329 [2023-11-19 07:50:32,946 INFO L226 Difference]: Without dead ends: 316 [2023-11-19 07:50:32,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2023-11-19 07:50:32,948 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 126 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:32,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1059 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-19 07:50:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2023-11-19 07:50:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 254 states have (on average 1.1141732283464567) internal successors, (283), 255 states have internal predecessors, (283), 33 states have call successors, (33), 21 states have call predecessors, (33), 27 states have return successors, (39), 39 states have call predecessors, (39), 32 states have call successors, (39) [2023-11-19 07:50:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 355 transitions. [2023-11-19 07:50:32,973 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 355 transitions. Word has length 69 [2023-11-19 07:50:32,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:32,973 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 355 transitions. [2023-11-19 07:50:32,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 10 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (13), 13 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-19 07:50:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 355 transitions. [2023-11-19 07:50:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:50:32,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:32,975 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:33,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:33,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:50:33,191 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting multiple_ofErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:33,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1270351096, now seen corresponding path program 1 times [2023-11-19 07:50:33,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:33,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979673947] [2023-11-19 07:50:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-19 07:50:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:50:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:50:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:50:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 75 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 07:50:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979673947] [2023-11-19 07:50:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979673947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354785219] [2023-11-19 07:50:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:33,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:33,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:33,576 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:33,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:50:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:33,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:50:33,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:33,914 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 37 proven. 62 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:50:33,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 64 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:50:35,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354785219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:35,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:35,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 24 [2023-11-19 07:50:35,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570106633] [2023-11-19 07:50:35,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:35,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:50:35,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:50:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:50:35,417 INFO L87 Difference]: Start difference. First operand 316 states and 355 transitions. Second operand has 24 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-19 07:50:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:35,757 INFO L93 Difference]: Finished difference Result 526 states and 602 transitions. [2023-11-19 07:50:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:50:35,758 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) Word has length 79 [2023-11-19 07:50:35,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:35,759 INFO L225 Difference]: With dead ends: 526 [2023-11-19 07:50:35,759 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:50:35,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 149 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 07:50:35,762 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 124 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:35,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 414 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:50:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:50:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-19 07:50:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 62 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (10), 10 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:50:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2023-11-19 07:50:35,767 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 79 [2023-11-19 07:50:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:35,767 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2023-11-19 07:50:35,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.375) internal successors, (129), 23 states have internal predecessors, (129), 13 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-19 07:50:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2023-11-19 07:50:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:50:35,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:35,769 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:35,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:35,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:50:35,991 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:35,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash 888426750, now seen corresponding path program 3 times [2023-11-19 07:50:35,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:35,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979739886] [2023-11-19 07:50:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:50:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-19 07:50:37,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:37,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979739886] [2023-11-19 07:50:37,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979739886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:37,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485595625] [2023-11-19 07:50:37,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:50:37,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:37,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:37,761 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:37,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:50:37,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-19 07:50:37,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:37,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-19 07:50:37,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-11-19 07:50:38,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 30 proven. 356 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-11-19 07:50:44,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485595625] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:44,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:44,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 23] total 51 [2023-11-19 07:50:44,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107330011] [2023-11-19 07:50:44,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:44,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-19 07:50:44,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-19 07:50:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=2308, Unknown=0, NotChecked=0, Total=2652 [2023-11-19 07:50:44,205 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 52 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 50 states have internal predecessors, (150), 10 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (25), 25 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-19 07:50:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:50:45,512 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2023-11-19 07:50:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-19 07:50:45,513 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 50 states have internal predecessors, (150), 10 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (25), 25 states have call predecessors, (25), 8 states have call successors, (25) Word has length 131 [2023-11-19 07:50:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:50:45,514 INFO L225 Difference]: With dead ends: 141 [2023-11-19 07:50:45,514 INFO L226 Difference]: Without dead ends: 116 [2023-11-19 07:50:45,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1076, Invalid=5730, Unknown=0, NotChecked=0, Total=6806 [2023-11-19 07:50:45,519 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 376 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:50:45,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 657 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:50:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-19 07:50:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-19 07:50:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 17 states have return successors, (18), 18 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-19 07:50:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2023-11-19 07:50:45,525 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 131 [2023-11-19 07:50:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:50:45,525 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2023-11-19 07:50:45,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 50 states have internal predecessors, (150), 10 states have call successors, (12), 3 states have call predecessors, (12), 16 states have return successors, (25), 25 states have call predecessors, (25), 8 states have call successors, (25) [2023-11-19 07:50:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2023-11-19 07:50:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-19 07:50:45,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:50:45,529 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:50:45,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:50:45,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:50:45,742 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [multiple_ofErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multiple_ofErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 07:50:45,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:50:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash 122163454, now seen corresponding path program 4 times [2023-11-19 07:50:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:50:45,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832673433] [2023-11-19 07:50:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:50:45,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:50:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 07:50:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-19 07:50:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-19 07:50:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:50:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2023-11-19 07:50:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:50:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832673433] [2023-11-19 07:50:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832673433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:50:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571860512] [2023-11-19 07:50:53,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:50:53,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:50:53,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:50:53,555 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:50:53,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e7a70a-26d0-49a7-a73d-9cd003dcc82c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:50:53,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:50:53,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:50:53,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-19 07:50:53,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:50:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1743 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2023-11-19 07:50:54,910 INFO L327 TraceCheckSpWp]: Computing backward predicates...