./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/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_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/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_c0f54b20-08ce-4a84-a401-86e52e3db22b/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 ce152ab821d49eb9acb39ce161d7ea2c6b8a3d3fa002051e62cb16783ef9575a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:26,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:26,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:47:26,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:26,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:26,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:26,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:26,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:26,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:26,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:26,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:26,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:26,429 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:26,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:26,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:26,432 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:26,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:26,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:26,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:26,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:26,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:26,436 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:26,437 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:47:26,437 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:47:26,438 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:26,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:26,439 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:26,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:26,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:26,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:26,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:26,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:26,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:26,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:26,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:26,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:26,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:26,444 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:26,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:26,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:26,444 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:26,445 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_c0f54b20-08ce-4a84-a401-86e52e3db22b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce152ab821d49eb9acb39ce161d7ea2c6b8a3d3fa002051e62cb16783ef9575a [2023-11-19 07:47:26,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:26,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:26,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:26,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:26,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:26,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c [2023-11-19 07:47:29,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:30,180 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:30,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c [2023-11-19 07:47:30,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/data/e8986d2ed/0b40fca0dca54e4aa72eac0ef8f25d86/FLAGd0b12eb29 [2023-11-19 07:47:30,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/data/e8986d2ed/0b40fca0dca54e4aa72eac0ef8f25d86 [2023-11-19 07:47:30,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:30,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:30,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:30,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:30,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:30,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e989d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30, skipping insertion in model container [2023-11-19 07:47:30,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:30,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:30,451 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:30,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:30,489 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:30,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30 WrapperNode [2023-11-19 07:47:30,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:30,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:30,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:30,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:30,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,531 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-11-19 07:47:30,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:30,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:30,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:30,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:30,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:30,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:30,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:30,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:30,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (1/1) ... [2023-11-19 07:47:30,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:30,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:30,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:30,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:30,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:30,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:30,647 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:30,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:47:30,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:47:30,728 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:30,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:30,991 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:31,000 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:31,000 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:47:31,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:31 BoogieIcfgContainer [2023-11-19 07:47:31,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:31,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:31,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:31,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:31,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:30" (1/3) ... [2023-11-19 07:47:31,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ff9ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:31, skipping insertion in model container [2023-11-19 07:47:31,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:30" (2/3) ... [2023-11-19 07:47:31,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ff9ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:31, skipping insertion in model container [2023-11-19 07:47:31,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:31" (3/3) ... [2023-11-19 07:47:31,020 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound100.c [2023-11-19 07:47:31,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:31,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:47:31,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:31,098 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;@3b5c41ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:31,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:47:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 35 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:47:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:47:31,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:31,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:31,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:31,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2022069469, now seen corresponding path program 1 times [2023-11-19 07:47:31,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:31,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771059482] [2023-11-19 07:47:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:31,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:47:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:47:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:47:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:47:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:31,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771059482] [2023-11-19 07:47:31,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771059482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:31,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:31,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59960386] [2023-11-19 07:47:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:31,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:31,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:31,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:31,438 INFO L87 Difference]: Start difference. First operand has 47 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 35 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:47:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:31,465 INFO L93 Difference]: Finished difference Result 90 states and 132 transitions. [2023-11-19 07:47:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:31,467 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-11-19 07:47:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:31,475 INFO L225 Difference]: With dead ends: 90 [2023-11-19 07:47:31,476 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 07:47:31,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:31,483 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:31,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 07:47:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-19 07:47:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 29 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-11-19 07:47:31,522 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 25 [2023-11-19 07:47:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:31,522 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-19 07:47:31,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:47:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2023-11-19 07:47:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:47:31,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:31,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:31,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:47:31,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:31,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:31,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2112941475, now seen corresponding path program 1 times [2023-11-19 07:47:31,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:31,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011383441] [2023-11-19 07:47:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:31,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:47:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:47:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:47:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:47:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:31,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011383441] [2023-11-19 07:47:31,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011383441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:31,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:31,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:31,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100653233] [2023-11-19 07:47:31,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:31,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:31,818 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:47:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:31,876 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-11-19 07:47:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:31,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2023-11-19 07:47:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:31,878 INFO L225 Difference]: With dead ends: 45 [2023-11-19 07:47:31,878 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 07:47:31,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:31,880 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:31,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 07:47:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-11-19 07:47:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-11-19 07:47:31,893 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 25 [2023-11-19 07:47:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:31,895 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-11-19 07:47:31,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:47:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-11-19 07:47:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:47:31,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:31,897 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 07:47:31,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:47:31,898 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:31,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1804441474, now seen corresponding path program 1 times [2023-11-19 07:47:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:31,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462295247] [2023-11-19 07:47:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:31,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:31,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:31,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1249331381] [2023-11-19 07:47:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:31,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:31,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:31,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:31,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:32,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:32,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:32,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:32,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462295247] [2023-11-19 07:47:32,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249331381] [2023-11-19 07:47:32,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249331381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:32,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:32,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862682397] [2023-11-19 07:47:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:32,150 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:47:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:32,279 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-11-19 07:47:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:32,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-19 07:47:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:32,282 INFO L225 Difference]: With dead ends: 51 [2023-11-19 07:47:32,285 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 07:47:32,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:32,291 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:32,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 07:47:32,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2023-11-19 07:47:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2023-11-19 07:47:32,317 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 35 [2023-11-19 07:47:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:32,319 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2023-11-19 07:47:32,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:47:32,320 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2023-11-19 07:47:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:47:32,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:32,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 07:47:32,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:32,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:32,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:32,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash -103110780, now seen corresponding path program 1 times [2023-11-19 07:47:32,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964866139] [2023-11-19 07:47:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:32,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:32,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324948108] [2023-11-19 07:47:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:32,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:32,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:32,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:32,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:32,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:32,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:32,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:32,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964866139] [2023-11-19 07:47:32,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324948108] [2023-11-19 07:47:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324948108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:32,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133531870] [2023-11-19 07:47:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:32,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:32,749 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:47:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:32,911 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-11-19 07:47:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:32,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-19 07:47:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:32,915 INFO L225 Difference]: With dead ends: 54 [2023-11-19 07:47:32,915 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 07:47:32,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:32,920 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:32,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 110 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 07:47:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-11-19 07:47:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:47:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2023-11-19 07:47:32,943 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 36 [2023-11-19 07:47:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:32,944 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2023-11-19 07:47:32,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:47:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2023-11-19 07:47:32,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:47:32,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:32,946 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 07:47:32,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:33,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:33,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:33,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash -871561341, now seen corresponding path program 1 times [2023-11-19 07:47:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:33,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213522727] [2023-11-19 07:47:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:33,184 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292535255] [2023-11-19 07:47:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:33,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:33,186 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:33,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:33,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:33,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:33,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:33,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:33,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213522727] [2023-11-19 07:47:33,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292535255] [2023-11-19 07:47:33,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292535255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:33,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974179332] [2023-11-19 07:47:33,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:33,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:33,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:33,411 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:47:33,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:33,519 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2023-11-19 07:47:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-19 07:47:33,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:33,527 INFO L225 Difference]: With dead ends: 101 [2023-11-19 07:47:33,527 INFO L226 Difference]: Without dead ends: 63 [2023-11-19 07:47:33,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:33,529 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:33,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 159 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-19 07:47:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-19 07:47:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.2) internal successors, (54), 49 states have internal predecessors, (54), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:47:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2023-11-19 07:47:33,551 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 39 [2023-11-19 07:47:33,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:33,552 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2023-11-19 07:47:33,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:47:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2023-11-19 07:47:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:47:33,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:33,554 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 07:47:33,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:33,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:33,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:33,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:33,766 INFO L85 PathProgramCache]: Analyzing trace with hash -948546387, now seen corresponding path program 1 times [2023-11-19 07:47:33,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:33,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455544508] [2023-11-19 07:47:33,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:33,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:33,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470371121] [2023-11-19 07:47:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:33,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:33,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:33,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:33,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:47:33,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:33,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455544508] [2023-11-19 07:47:33,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470371121] [2023-11-19 07:47:33,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470371121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:33,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:47:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230828347] [2023-11-19 07:47:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:33,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:33,938 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:47:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:34,074 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-11-19 07:47:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:34,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2023-11-19 07:47:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:34,078 INFO L225 Difference]: With dead ends: 63 [2023-11-19 07:47:34,079 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 07:47:34,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:34,083 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:34,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 125 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 07:47:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-19 07:47:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:47:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2023-11-19 07:47:34,105 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 45 [2023-11-19 07:47:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:34,106 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2023-11-19 07:47:34,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:47:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2023-11-19 07:47:34,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:47:34,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:34,108 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1] [2023-11-19 07:47:34,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:34,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:34,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:34,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash 659833163, now seen corresponding path program 1 times [2023-11-19 07:47:34,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:34,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909052244] [2023-11-19 07:47:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:34,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:34,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:34,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418276455] [2023-11-19 07:47:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:34,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:34,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:34,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:34,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:47:34,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:34,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:47:34,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909052244] [2023-11-19 07:47:34,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418276455] [2023-11-19 07:47:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418276455] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:34,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-19 07:47:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247003177] [2023-11-19 07:47:34,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:34,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:34,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:34,578 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:47:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:34,720 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2023-11-19 07:47:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2023-11-19 07:47:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:34,725 INFO L225 Difference]: With dead ends: 76 [2023-11-19 07:47:34,726 INFO L226 Difference]: Without dead ends: 75 [2023-11-19 07:47:34,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:47:34,728 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:34,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 124 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-19 07:47:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-11-19 07:47:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 53 states have (on average 1.169811320754717) internal successors, (62), 55 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:47:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2023-11-19 07:47:34,755 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 46 [2023-11-19 07:47:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:34,756 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2023-11-19 07:47:34,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:47:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2023-11-19 07:47:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:47:34,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:34,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2023-11-19 07:47:34,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:34,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:34,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:34,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:34,995 INFO L85 PathProgramCache]: Analyzing trace with hash 659870899, now seen corresponding path program 1 times [2023-11-19 07:47:34,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:34,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221444228] [2023-11-19 07:47:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:34,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226746711] [2023-11-19 07:47:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:35,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:35,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:35,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:47:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:47:35,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:35,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:47:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221444228] [2023-11-19 07:47:35,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226746711] [2023-11-19 07:47:35,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226746711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:35,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:35,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-19 07:47:35,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999853898] [2023-11-19 07:47:35,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:35,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:47:35,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:35,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:47:35,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:35,279 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:47:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:35,503 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2023-11-19 07:47:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:47:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 46 [2023-11-19 07:47:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:35,506 INFO L225 Difference]: With dead ends: 103 [2023-11-19 07:47:35,507 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 07:47:35,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:47:35,513 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 89 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:35,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 174 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 07:47:35,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2023-11-19 07:47:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 74 states have internal predecessors, (85), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:47:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2023-11-19 07:47:35,529 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 46 [2023-11-19 07:47:35,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:35,529 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2023-11-19 07:47:35,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:47:35,529 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2023-11-19 07:47:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:47:35,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:35,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:35,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:35,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:35,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:35,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash -174676804, now seen corresponding path program 1 times [2023-11-19 07:47:35,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:35,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743747418] [2023-11-19 07:47:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:35,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22322976] [2023-11-19 07:47:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:35,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:35,777 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:35,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:47:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:47:35,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:35,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:47:36,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:36,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743747418] [2023-11-19 07:47:36,071 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:36,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22322976] [2023-11-19 07:47:36,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22322976] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:36,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:36,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-19 07:47:36,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840775402] [2023-11-19 07:47:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:36,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:36,074 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:47:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:36,209 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2023-11-19 07:47:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:47:36,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2023-11-19 07:47:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:36,211 INFO L225 Difference]: With dead ends: 176 [2023-11-19 07:47:36,212 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:47:36,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:47:36,213 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:36,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 172 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:47:36,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2023-11-19 07:47:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.175) internal successors, (94), 82 states have internal predecessors, (94), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:47:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2023-11-19 07:47:36,228 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 50 [2023-11-19 07:47:36,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:36,229 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2023-11-19 07:47:36,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:47:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2023-11-19 07:47:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:47:36,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:36,231 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:36,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:36,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:36,442 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:36,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash 314959588, now seen corresponding path program 1 times [2023-11-19 07:47:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:36,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889843108] [2023-11-19 07:47:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:36,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:36,473 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204485531] [2023-11-19 07:47:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:36,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:36,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:36,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:36,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:47:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:36,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:47:36,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:36,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:47:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:36,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889843108] [2023-11-19 07:47:36,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:36,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204485531] [2023-11-19 07:47:36,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204485531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:36,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:36,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-19 07:47:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178777907] [2023-11-19 07:47:36,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:36,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:47:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:47:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:36,769 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 07:47:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:36,972 INFO L93 Difference]: Finished difference Result 205 states and 234 transitions. [2023-11-19 07:47:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:47:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 50 [2023-11-19 07:47:36,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:36,974 INFO L225 Difference]: With dead ends: 205 [2023-11-19 07:47:36,974 INFO L226 Difference]: Without dead ends: 136 [2023-11-19 07:47:36,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:47:36,976 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 49 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:36,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 218 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-19 07:47:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2023-11-19 07:47:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 100 states have (on average 1.16) internal successors, (116), 102 states have internal predecessors, (116), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:47:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2023-11-19 07:47:36,992 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 50 [2023-11-19 07:47:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:36,992 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2023-11-19 07:47:36,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 07:47:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2023-11-19 07:47:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:47:36,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:36,994 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-19 07:47:37,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:37,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:47:37,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:37,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:37,214 INFO L85 PathProgramCache]: Analyzing trace with hash 623358272, now seen corresponding path program 1 times [2023-11-19 07:47:37,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:37,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466708529] [2023-11-19 07:47:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:37,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:37,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522148836] [2023-11-19 07:47:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:37,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:37,228 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:37,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:47:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:37,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:47:37,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:37,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466708529] [2023-11-19 07:47:37,387 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:37,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522148836] [2023-11-19 07:47:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522148836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:37,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:37,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915712158] [2023-11-19 07:47:37,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:37,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:37,390 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 07:47:37,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:37,441 INFO L93 Difference]: Finished difference Result 226 states and 263 transitions. [2023-11-19 07:47:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:37,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2023-11-19 07:47:37,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:37,444 INFO L225 Difference]: With dead ends: 226 [2023-11-19 07:47:37,444 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 07:47:37,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:37,445 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:37,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 121 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 07:47:37,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2023-11-19 07:47:37,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 117 states have internal predecessors, (134), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:47:37,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 168 transitions. [2023-11-19 07:47:37,464 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 168 transitions. Word has length 56 [2023-11-19 07:47:37,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:37,465 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 168 transitions. [2023-11-19 07:47:37,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 07:47:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 168 transitions. [2023-11-19 07:47:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:47:37,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:37,467 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-19 07:47:37,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:37,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:47:37,682 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:37,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 623459560, now seen corresponding path program 1 times [2023-11-19 07:47:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998847888] [2023-11-19 07:47:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:37,694 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:37,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895407195] [2023-11-19 07:47:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:37,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:37,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:37,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:47:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:47:37,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:37,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:47:37,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998847888] [2023-11-19 07:47:37,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:37,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895407195] [2023-11-19 07:47:37,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895407195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:37,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:37,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-19 07:47:37,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40118250] [2023-11-19 07:47:37,999 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:37,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:47:38,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:38,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:47:38,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:47:38,001 INFO L87 Difference]: Start difference. First operand 146 states and 168 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:47:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:38,366 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2023-11-19 07:47:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-19 07:47:38,367 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 56 [2023-11-19 07:47:38,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:38,368 INFO L225 Difference]: With dead ends: 192 [2023-11-19 07:47:38,369 INFO L226 Difference]: Without dead ends: 191 [2023-11-19 07:47:38,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:47:38,370 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 135 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:38,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 217 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-19 07:47:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 176. [2023-11-19 07:47:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 141 states have internal predecessors, (164), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:47:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 204 transitions. [2023-11-19 07:47:38,392 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 204 transitions. Word has length 56 [2023-11-19 07:47:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:38,393 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 204 transitions. [2023-11-19 07:47:38,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:47:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 204 transitions. [2023-11-19 07:47:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:47:38,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:38,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:38,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:38,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:47:38,610 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:38,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1021670951, now seen corresponding path program 1 times [2023-11-19 07:47:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357176441] [2023-11-19 07:47:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:38,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198145451] [2023-11-19 07:47:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:38,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:38,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:38,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:38,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:47:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:38,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:47:38,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:38,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:47:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:38,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357176441] [2023-11-19 07:47:38,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198145451] [2023-11-19 07:47:38,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198145451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:38,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:38,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-19 07:47:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656563260] [2023-11-19 07:47:38,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:38,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:47:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:47:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:47:38,978 INFO L87 Difference]: Start difference. First operand 176 states and 204 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-19 07:47:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:39,311 INFO L93 Difference]: Finished difference Result 367 states and 427 transitions. [2023-11-19 07:47:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 07:47:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 60 [2023-11-19 07:47:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:39,314 INFO L225 Difference]: With dead ends: 367 [2023-11-19 07:47:39,314 INFO L226 Difference]: Without dead ends: 250 [2023-11-19 07:47:39,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 07:47:39,316 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 92 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:39,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 302 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:39,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-19 07:47:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 240. [2023-11-19 07:47:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 191 states have (on average 1.1465968586387434) internal successors, (219), 193 states have internal predecessors, (219), 26 states have call successors, (26), 20 states have call predecessors, (26), 20 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:47:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 271 transitions. [2023-11-19 07:47:39,342 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 271 transitions. Word has length 60 [2023-11-19 07:47:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:39,343 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 271 transitions. [2023-11-19 07:47:39,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-19 07:47:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 271 transitions. [2023-11-19 07:47:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:47:39,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:39,344 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:39,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:39,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:47:39,558 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:39,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 81686767, now seen corresponding path program 1 times [2023-11-19 07:47:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117762779] [2023-11-19 07:47:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:39,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:39,570 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:39,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954108190] [2023-11-19 07:47:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:39,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:39,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:39,572 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:39,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:47:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:39,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:47:39,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:39,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:47:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117762779] [2023-11-19 07:47:39,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954108190] [2023-11-19 07:47:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954108190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:39,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:39,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-19 07:47:39,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052876184] [2023-11-19 07:47:39,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:39,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:47:39,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:47:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:47:39,961 INFO L87 Difference]: Start difference. First operand 240 states and 271 transitions. Second operand has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 states have internal predecessors, (65), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:47:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:40,440 INFO L93 Difference]: Finished difference Result 304 states and 344 transitions. [2023-11-19 07:47:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-19 07:47:40,441 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 states have internal predecessors, (65), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 66 [2023-11-19 07:47:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:40,444 INFO L225 Difference]: With dead ends: 304 [2023-11-19 07:47:40,444 INFO L226 Difference]: Without dead ends: 302 [2023-11-19 07:47:40,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 07:47:40,446 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:40,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 241 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-19 07:47:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 284. [2023-11-19 07:47:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 227 states have (on average 1.1497797356828194) internal successors, (261), 229 states have internal predecessors, (261), 30 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:47:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 321 transitions. [2023-11-19 07:47:40,476 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 321 transitions. Word has length 66 [2023-11-19 07:47:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:40,476 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 321 transitions. [2023-11-19 07:47:40,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 states have internal predecessors, (65), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:47:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 321 transitions. [2023-11-19 07:47:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:47:40,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:40,478 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:40,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:40,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:47:40,699 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:40,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:40,700 INFO L85 PathProgramCache]: Analyzing trace with hash -203909190, now seen corresponding path program 1 times [2023-11-19 07:47:40,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:40,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074966578] [2023-11-19 07:47:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:40,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:40,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1081305060] [2023-11-19 07:47:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:40,718 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:40,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:47:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:40,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:47:40,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 58 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:40,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:41,195 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 07:47:41,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:41,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074966578] [2023-11-19 07:47:41,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:41,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081305060] [2023-11-19 07:47:41,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081305060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:41,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:41,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-19 07:47:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350999066] [2023-11-19 07:47:41,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:47:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:47:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:47:41,200 INFO L87 Difference]: Start difference. First operand 284 states and 321 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:47:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:41,852 INFO L93 Difference]: Finished difference Result 352 states and 401 transitions. [2023-11-19 07:47:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-19 07:47:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 76 [2023-11-19 07:47:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:41,857 INFO L225 Difference]: With dead ends: 352 [2023-11-19 07:47:41,857 INFO L226 Difference]: Without dead ends: 350 [2023-11-19 07:47:41,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1931, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 07:47:41,861 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 169 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:41,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 315 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:41,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-19 07:47:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 291. [2023-11-19 07:47:41,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 232 states have (on average 1.1551724137931034) internal successors, (268), 234 states have internal predecessors, (268), 31 states have call successors, (31), 25 states have call predecessors, (31), 25 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:47:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 330 transitions. [2023-11-19 07:47:41,894 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 330 transitions. Word has length 76 [2023-11-19 07:47:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:41,895 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 330 transitions. [2023-11-19 07:47:41,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:47:41,895 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 330 transitions. [2023-11-19 07:47:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:47:41,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:41,897 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:41,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:47:42,110 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:42,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1563808378, now seen corresponding path program 1 times [2023-11-19 07:47:42,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:42,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527077053] [2023-11-19 07:47:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:42,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:42,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147229390] [2023-11-19 07:47:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:42,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:42,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:42,126 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:42,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:47:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:42,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:47:42,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:42,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 07:47:42,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527077053] [2023-11-19 07:47:42,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147229390] [2023-11-19 07:47:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147229390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:42,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:42,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-19 07:47:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130228087] [2023-11-19 07:47:42,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:42,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:47:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:47:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:47:42,637 INFO L87 Difference]: Start difference. First operand 291 states and 330 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:47:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:43,333 INFO L93 Difference]: Finished difference Result 406 states and 466 transitions. [2023-11-19 07:47:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-19 07:47:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 76 [2023-11-19 07:47:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:43,337 INFO L225 Difference]: With dead ends: 406 [2023-11-19 07:47:43,337 INFO L226 Difference]: Without dead ends: 404 [2023-11-19 07:47:43,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=562, Invalid=2090, Unknown=0, NotChecked=0, Total=2652 [2023-11-19 07:47:43,340 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:43,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 327 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-19 07:47:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 374. [2023-11-19 07:47:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 299 states have (on average 1.173913043478261) internal successors, (351), 301 states have internal predecessors, (351), 39 states have call successors, (39), 33 states have call predecessors, (39), 33 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-19 07:47:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 429 transitions. [2023-11-19 07:47:43,376 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 429 transitions. Word has length 76 [2023-11-19 07:47:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:43,376 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 429 transitions. [2023-11-19 07:47:43,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:47:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 429 transitions. [2023-11-19 07:47:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:47:43,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:43,378 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 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, 1, 1, 1] [2023-11-19 07:47:43,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:43,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:47:43,593 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:43,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:43,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1351222409, now seen corresponding path program 1 times [2023-11-19 07:47:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:43,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622234869] [2023-11-19 07:47:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:43,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:43,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:43,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349692238] [2023-11-19 07:47:43,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:43,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:43,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:43,612 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:43,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:47:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:43,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:47:43,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 62 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:43,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 07:47:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:44,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622234869] [2023-11-19 07:47:44,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:44,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349692238] [2023-11-19 07:47:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349692238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:44,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:44,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-11-19 07:47:44,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511945333] [2023-11-19 07:47:44,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:44,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:47:44,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:47:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:47:44,150 INFO L87 Difference]: Start difference. First operand 374 states and 429 transitions. Second operand has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-19 07:47:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:44,809 INFO L93 Difference]: Finished difference Result 798 states and 928 transitions. [2023-11-19 07:47:44,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-19 07:47:44,810 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 80 [2023-11-19 07:47:44,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:44,814 INFO L225 Difference]: With dead ends: 798 [2023-11-19 07:47:44,814 INFO L226 Difference]: Without dead ends: 561 [2023-11-19 07:47:44,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=627, Invalid=2453, Unknown=0, NotChecked=0, Total=3080 [2023-11-19 07:47:44,817 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 151 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:44,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 380 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-11-19 07:47:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 498. [2023-11-19 07:47:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 399 states have (on average 1.1604010025062657) internal successors, (463), 401 states have internal predecessors, (463), 51 states have call successors, (51), 45 states have call predecessors, (51), 45 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-19 07:47:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 565 transitions. [2023-11-19 07:47:44,869 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 565 transitions. Word has length 80 [2023-11-19 07:47:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:44,870 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 565 transitions. [2023-11-19 07:47:44,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-19 07:47:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 565 transitions. [2023-11-19 07:47:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 07:47:44,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:44,872 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 07:47:44,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:45,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:47:45,086 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:45,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 193365510, now seen corresponding path program 1 times [2023-11-19 07:47:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613147022] [2023-11-19 07:47:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:45,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:45,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:45,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186550813] [2023-11-19 07:47:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:45,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:45,103 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:45,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:47:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:45,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:47:45,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 3 proven. 126 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:45,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-19 07:47:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613147022] [2023-11-19 07:47:45,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:45,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186550813] [2023-11-19 07:47:45,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186550813] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:45,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:45,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-11-19 07:47:45,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059685382] [2023-11-19 07:47:45,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:45,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 07:47:45,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 07:47:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:47:45,737 INFO L87 Difference]: Start difference. First operand 498 states and 565 transitions. Second operand has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:47:46,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:46,700 INFO L93 Difference]: Finished difference Result 653 states and 743 transitions. [2023-11-19 07:47:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-19 07:47:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) Word has length 96 [2023-11-19 07:47:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:46,705 INFO L225 Difference]: With dead ends: 653 [2023-11-19 07:47:46,705 INFO L226 Difference]: Without dead ends: 651 [2023-11-19 07:47:46,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=969, Invalid=3861, Unknown=0, NotChecked=0, Total=4830 [2023-11-19 07:47:46,709 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 241 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:46,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 341 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-11-19 07:47:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 467. [2023-11-19 07:47:46,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 374 states have (on average 1.1550802139037433) internal successors, (432), 377 states have internal predecessors, (432), 48 states have call successors, (48), 42 states have call predecessors, (48), 42 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:47:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 528 transitions. [2023-11-19 07:47:46,759 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 528 transitions. Word has length 96 [2023-11-19 07:47:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:46,759 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 528 transitions. [2023-11-19 07:47:46,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:47:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 528 transitions. [2023-11-19 07:47:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 07:47:46,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:46,763 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2023-11-19 07:47:46,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:46,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:47:46,978 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:46,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1022957436, now seen corresponding path program 2 times [2023-11-19 07:47:46,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154430918] [2023-11-19 07:47:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:46,994 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:46,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435496466] [2023-11-19 07:47:46,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:46,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:46,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:46,995 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:47,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:47:47,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:47,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:47,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:47:47,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 3 proven. 144 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:47,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-19 07:47:47,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:47,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154430918] [2023-11-19 07:47:47,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435496466] [2023-11-19 07:47:47,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435496466] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:47,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:47,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-11-19 07:47:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328421714] [2023-11-19 07:47:47,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:47,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 07:47:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:47,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 07:47:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:47:47,662 INFO L87 Difference]: Start difference. First operand 467 states and 528 transitions. Second operand has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:47:48,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:48,668 INFO L93 Difference]: Finished difference Result 610 states and 695 transitions. [2023-11-19 07:47:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-19 07:47:48,669 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) Word has length 96 [2023-11-19 07:47:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:48,674 INFO L225 Difference]: With dead ends: 610 [2023-11-19 07:47:48,675 INFO L226 Difference]: Without dead ends: 607 [2023-11-19 07:47:48,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1011, Invalid=3819, Unknown=0, NotChecked=0, Total=4830 [2023-11-19 07:47:48,678 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 243 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:48,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 374 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-19 07:47:48,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 507. [2023-11-19 07:47:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 406 states have (on average 1.1625615763546797) internal successors, (472), 409 states have internal predecessors, (472), 52 states have call successors, (52), 46 states have call predecessors, (52), 46 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 07:47:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 576 transitions. [2023-11-19 07:47:48,742 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 576 transitions. Word has length 96 [2023-11-19 07:47:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:48,742 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 576 transitions. [2023-11-19 07:47:48,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:47:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 576 transitions. [2023-11-19 07:47:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:47:48,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:48,745 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:48,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:48,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:48,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:48,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:48,967 INFO L85 PathProgramCache]: Analyzing trace with hash 517027421, now seen corresponding path program 2 times [2023-11-19 07:47:48,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:48,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044114389] [2023-11-19 07:47:48,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:48,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:48,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518263908] [2023-11-19 07:47:48,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:48,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:48,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:48,987 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:49,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:47:49,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:49,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:49,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:47:49,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:49,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-19 07:47:49,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044114389] [2023-11-19 07:47:49,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518263908] [2023-11-19 07:47:49,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518263908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:49,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:49,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 37 [2023-11-19 07:47:49,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210270894] [2023-11-19 07:47:49,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:49,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-19 07:47:49,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-19 07:47:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 07:47:49,816 INFO L87 Difference]: Start difference. First operand 507 states and 576 transitions. Second operand has 38 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:47:51,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:51,021 INFO L93 Difference]: Finished difference Result 1078 states and 1249 transitions. [2023-11-19 07:47:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-19 07:47:51,022 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) Word has length 106 [2023-11-19 07:47:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:51,028 INFO L225 Difference]: With dead ends: 1078 [2023-11-19 07:47:51,028 INFO L226 Difference]: Without dead ends: 822 [2023-11-19 07:47:51,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1395, Invalid=5411, Unknown=0, NotChecked=0, Total=6806 [2023-11-19 07:47:51,033 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 324 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:51,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 477 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-11-19 07:47:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 699. [2023-11-19 07:47:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 558 states have (on average 1.1756272401433692) internal successors, (656), 561 states have internal predecessors, (656), 72 states have call successors, (72), 66 states have call predecessors, (72), 66 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-19 07:47:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 800 transitions. [2023-11-19 07:47:51,103 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 800 transitions. Word has length 106 [2023-11-19 07:47:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:51,104 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 800 transitions. [2023-11-19 07:47:51,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:47:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 800 transitions. [2023-11-19 07:47:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:47:51,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:51,107 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2023-11-19 07:47:51,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:51,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:51,322 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:51,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1283472370, now seen corresponding path program 2 times [2023-11-19 07:47:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:51,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286227010] [2023-11-19 07:47:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:51,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:51,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346410695] [2023-11-19 07:47:51,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:51,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:51,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:51,338 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:51,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:47:51,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:51,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:51,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:47:51,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 3 proven. 186 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:51,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 3 proven. 74 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-19 07:47:52,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:52,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286227010] [2023-11-19 07:47:52,206 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:52,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346410695] [2023-11-19 07:47:52,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346410695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:52,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:52,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2023-11-19 07:47:52,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069524942] [2023-11-19 07:47:52,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:52,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-19 07:47:52,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-19 07:47:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 07:47:52,210 INFO L87 Difference]: Start difference. First operand 699 states and 800 transitions. Second operand has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 38 states have internal predecessors, (130), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:47:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:53,475 INFO L93 Difference]: Finished difference Result 1372 states and 1591 transitions. [2023-11-19 07:47:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-19 07:47:53,476 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 38 states have internal predecessors, (130), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) Word has length 110 [2023-11-19 07:47:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:53,483 INFO L225 Difference]: With dead ends: 1372 [2023-11-19 07:47:53,483 INFO L226 Difference]: Without dead ends: 1086 [2023-11-19 07:47:53,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1445, Invalid=5695, Unknown=0, NotChecked=0, Total=7140 [2023-11-19 07:47:53,487 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 276 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:53,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 352 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-11-19 07:47:53,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 947. [2023-11-19 07:47:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 758 states have (on average 1.1569920844327177) internal successors, (877), 761 states have internal predecessors, (877), 96 states have call successors, (96), 90 states have call predecessors, (96), 90 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-19 07:47:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1069 transitions. [2023-11-19 07:47:53,577 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1069 transitions. Word has length 110 [2023-11-19 07:47:53,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:53,578 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1069 transitions. [2023-11-19 07:47:53,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 38 states have internal predecessors, (130), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:47:53,578 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1069 transitions. [2023-11-19 07:47:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 07:47:53,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:53,581 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1] [2023-11-19 07:47:53,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:53,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:53,798 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:53,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:53,798 INFO L85 PathProgramCache]: Analyzing trace with hash -26825272, now seen corresponding path program 2 times [2023-11-19 07:47:53,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:53,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075335569] [2023-11-19 07:47:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:53,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:53,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:53,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232197493] [2023-11-19 07:47:53,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:53,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:53,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:53,813 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:53,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:47:53,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:53,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:53,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:47:53,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:54,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-19 07:47:54,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:54,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075335569] [2023-11-19 07:47:54,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:54,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232197493] [2023-11-19 07:47:54,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232197493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:54,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:54,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 41 [2023-11-19 07:47:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269358980] [2023-11-19 07:47:54,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:54,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-19 07:47:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-19 07:47:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1373, Unknown=0, NotChecked=0, Total=1722 [2023-11-19 07:47:54,724 INFO L87 Difference]: Start difference. First operand 947 states and 1069 transitions. Second operand has 42 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 42 states have internal predecessors, (138), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-19 07:47:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:56,125 INFO L93 Difference]: Finished difference Result 1451 states and 1636 transitions. [2023-11-19 07:47:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-19 07:47:56,127 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 42 states have internal predecessors, (138), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) Word has length 116 [2023-11-19 07:47:56,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:56,135 INFO L225 Difference]: With dead ends: 1451 [2023-11-19 07:47:56,135 INFO L226 Difference]: Without dead ends: 1448 [2023-11-19 07:47:56,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1706, Invalid=6850, Unknown=0, NotChecked=0, Total=8556 [2023-11-19 07:47:56,139 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 289 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:56,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 482 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:47:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-11-19 07:47:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1093. [2023-11-19 07:47:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 874 states have (on average 1.1590389016018308) internal successors, (1013), 877 states have internal predecessors, (1013), 111 states have call successors, (111), 105 states have call predecessors, (111), 105 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2023-11-19 07:47:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1235 transitions. [2023-11-19 07:47:56,247 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1235 transitions. Word has length 116 [2023-11-19 07:47:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:56,247 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1235 transitions. [2023-11-19 07:47:56,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 42 states have internal predecessors, (138), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-19 07:47:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1235 transitions. [2023-11-19 07:47:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-19 07:47:56,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:56,251 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:56,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:56,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:56,478 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:56,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash 481445039, now seen corresponding path program 3 times [2023-11-19 07:47:56,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:56,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277597836] [2023-11-19 07:47:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:56,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:56,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:56,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742895268] [2023-11-19 07:47:56,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:47:56,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:56,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:56,493 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:56,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:47:56,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:47:56,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:56,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:56,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-19 07:47:56,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:56,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:56,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277597836] [2023-11-19 07:47:56,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:56,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742895268] [2023-11-19 07:47:56,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742895268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:56,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:56,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:56,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260063845] [2023-11-19 07:47:56,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:56,596 INFO L87 Difference]: Start difference. First operand 1093 states and 1235 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:47:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:56,748 INFO L93 Difference]: Finished difference Result 1117 states and 1259 transitions. [2023-11-19 07:47:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:56,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 126 [2023-11-19 07:47:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:56,755 INFO L225 Difference]: With dead ends: 1117 [2023-11-19 07:47:56,755 INFO L226 Difference]: Without dead ends: 1116 [2023-11-19 07:47:56,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:56,756 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:56,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 116 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-11-19 07:47:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1055. [2023-11-19 07:47:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 846 states have (on average 1.1583924349881796) internal successors, (980), 849 states have internal predecessors, (980), 106 states have call successors, (106), 100 states have call predecessors, (106), 100 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-19 07:47:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1192 transitions. [2023-11-19 07:47:56,859 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1192 transitions. Word has length 126 [2023-11-19 07:47:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:56,859 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1192 transitions. [2023-11-19 07:47:56,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:47:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1192 transitions. [2023-11-19 07:47:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:47:56,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:56,863 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 4, 4, 4, 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] [2023-11-19 07:47:56,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:57,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:57,084 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:57,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:57,084 INFO L85 PathProgramCache]: Analyzing trace with hash -853588316, now seen corresponding path program 2 times [2023-11-19 07:47:57,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:57,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403046264] [2023-11-19 07:47:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:57,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:57,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:57,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442612049] [2023-11-19 07:47:57,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:57,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:57,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:57,097 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:57,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:47:57,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:57,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:57,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:47:57,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 3 proven. 380 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:47:57,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 3 proven. 200 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-19 07:47:58,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:58,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403046264] [2023-11-19 07:47:58,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:58,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442612049] [2023-11-19 07:47:58,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442612049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:58,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:58,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2023-11-19 07:47:58,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957780660] [2023-11-19 07:47:58,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:58,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-19 07:47:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:58,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-19 07:47:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=1595, Unknown=0, NotChecked=0, Total=2070 [2023-11-19 07:47:58,096 INFO L87 Difference]: Start difference. First operand 1055 states and 1192 transitions. Second operand has 46 states, 46 states have (on average 3.391304347826087) internal successors, (156), 46 states have internal predecessors, (156), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-19 07:47:59,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:59,477 INFO L93 Difference]: Finished difference Result 1720 states and 1963 transitions. [2023-11-19 07:47:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-19 07:47:59,478 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.391304347826087) internal successors, (156), 46 states have internal predecessors, (156), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 130 [2023-11-19 07:47:59,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:59,486 INFO L225 Difference]: With dead ends: 1720 [2023-11-19 07:47:59,486 INFO L226 Difference]: Without dead ends: 1470 [2023-11-19 07:47:59,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2264, Invalid=7242, Unknown=0, NotChecked=0, Total=9506 [2023-11-19 07:47:59,490 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 355 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:59,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 413 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-19 07:47:59,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1295. [2023-11-19 07:47:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1038 states have (on average 1.1454720616570329) internal successors, (1189), 1041 states have internal predecessors, (1189), 130 states have call successors, (130), 124 states have call predecessors, (130), 124 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2023-11-19 07:47:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1449 transitions. [2023-11-19 07:47:59,625 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1449 transitions. Word has length 130 [2023-11-19 07:47:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:59,626 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 1449 transitions. [2023-11-19 07:47:59,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.391304347826087) internal successors, (156), 46 states have internal predecessors, (156), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-19 07:47:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1449 transitions. [2023-11-19 07:47:59,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:47:59,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:59,631 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:59,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:59,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:59,851 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:47:59,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash 54513096, now seen corresponding path program 3 times [2023-11-19 07:47:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:59,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432232423] [2023-11-19 07:47:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:59,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:59,863 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:59,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029769486] [2023-11-19 07:47:59,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:47:59,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:59,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:59,864 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:59,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:47:59,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:47:59,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:59,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:47:59,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 77 proven. 1 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-19 07:47:59,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 07:48:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432232423] [2023-11-19 07:48:00,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029769486] [2023-11-19 07:48:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029769486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:00,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-19 07:48:00,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148220494] [2023-11-19 07:48:00,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:00,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:48:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:48:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:48:00,051 INFO L87 Difference]: Start difference. First operand 1295 states and 1449 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:48:00,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:00,267 INFO L93 Difference]: Finished difference Result 1340 states and 1499 transitions. [2023-11-19 07:48:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:48:00,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 130 [2023-11-19 07:48:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:00,274 INFO L225 Difference]: With dead ends: 1340 [2023-11-19 07:48:00,275 INFO L226 Difference]: Without dead ends: 1338 [2023-11-19 07:48:00,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:48:00,276 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:00,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 210 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2023-11-19 07:48:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 744. [2023-11-19 07:48:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 593 states have (on average 1.1332209106239461) internal successors, (672), 598 states have internal predecessors, (672), 77 states have call successors, (77), 71 states have call predecessors, (77), 71 states have return successors, (77), 74 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 07:48:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 826 transitions. [2023-11-19 07:48:00,359 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 826 transitions. Word has length 130 [2023-11-19 07:48:00,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:00,359 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 826 transitions. [2023-11-19 07:48:00,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:48:00,360 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 826 transitions. [2023-11-19 07:48:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:48:00,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:00,363 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:00,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:00,584 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:48:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1747613752, now seen corresponding path program 2 times [2023-11-19 07:48:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247774364] [2023-11-19 07:48:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:00,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:00,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842418181] [2023-11-19 07:48:00,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:48:00,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:00,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:00,599 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:00,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:48:00,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:48:00,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:48:00,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:48:00,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 744 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:48:01,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-19 07:48:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247774364] [2023-11-19 07:48:02,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:02,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842418181] [2023-11-19 07:48:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842418181] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:02,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:02,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 57 [2023-11-19 07:48:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347377636] [2023-11-19 07:48:02,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-19 07:48:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-19 07:48:02,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306 [2023-11-19 07:48:02,045 INFO L87 Difference]: Start difference. First operand 744 states and 826 transitions. Second operand has 58 states, 57 states have (on average 3.3333333333333335) internal successors, (190), 58 states have internal predecessors, (190), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-19 07:48:03,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:03,911 INFO L93 Difference]: Finished difference Result 1153 states and 1311 transitions. [2023-11-19 07:48:03,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-19 07:48:03,912 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.3333333333333335) internal successors, (190), 58 states have internal predecessors, (190), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) Word has length 156 [2023-11-19 07:48:03,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:03,917 INFO L225 Difference]: With dead ends: 1153 [2023-11-19 07:48:03,917 INFO L226 Difference]: Without dead ends: 973 [2023-11-19 07:48:03,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2587 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3662, Invalid=8548, Unknown=0, NotChecked=0, Total=12210 [2023-11-19 07:48:03,920 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 704 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:03,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 390 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:48:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-11-19 07:48:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 897. [2023-11-19 07:48:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 716 states have (on average 1.1480446927374302) internal successors, (822), 721 states have internal predecessors, (822), 92 states have call successors, (92), 86 states have call predecessors, (92), 86 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-19 07:48:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1006 transitions. [2023-11-19 07:48:04,020 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1006 transitions. Word has length 156 [2023-11-19 07:48:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:04,021 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1006 transitions. [2023-11-19 07:48:04,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.3333333333333335) internal successors, (190), 58 states have internal predecessors, (190), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-19 07:48:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1006 transitions. [2023-11-19 07:48:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-19 07:48:04,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:04,024 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 4, 4, 4, 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 07:48:04,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:04,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:48:04,238 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:48:04,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1058160385, now seen corresponding path program 1 times [2023-11-19 07:48:04,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:04,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860181402] [2023-11-19 07:48:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:04,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:04,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:04,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95641248] [2023-11-19 07:48:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:04,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:04,251 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:04,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:48:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:04,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:48:04,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:48:04,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-19 07:48:05,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860181402] [2023-11-19 07:48:05,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:05,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95641248] [2023-11-19 07:48:05,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95641248] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:05,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:05,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2023-11-19 07:48:05,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016753592] [2023-11-19 07:48:05,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:05,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-19 07:48:05,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-19 07:48:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2703, Unknown=0, NotChecked=0, Total=3540 [2023-11-19 07:48:05,779 INFO L87 Difference]: Start difference. First operand 897 states and 1006 transitions. Second operand has 60 states, 59 states have (on average 3.305084745762712) internal successors, (195), 60 states have internal predecessors, (195), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-19 07:48:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:08,477 INFO L93 Difference]: Finished difference Result 1217 states and 1392 transitions. [2023-11-19 07:48:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-11-19 07:48:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 3.305084745762712) internal successors, (195), 60 states have internal predecessors, (195), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) Word has length 166 [2023-11-19 07:48:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:08,482 INFO L225 Difference]: With dead ends: 1217 [2023-11-19 07:48:08,483 INFO L226 Difference]: Without dead ends: 1215 [2023-11-19 07:48:08,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4685, Invalid=15337, Unknown=0, NotChecked=0, Total=20022 [2023-11-19 07:48:08,487 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 801 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:08,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 326 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:48:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-19 07:48:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 931. [2023-11-19 07:48:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 744 states have (on average 1.1518817204301075) internal successors, (857), 749 states have internal predecessors, (857), 95 states have call successors, (95), 89 states have call predecessors, (95), 89 states have return successors, (95), 92 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 07:48:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1047 transitions. [2023-11-19 07:48:08,632 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1047 transitions. Word has length 166 [2023-11-19 07:48:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:08,633 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1047 transitions. [2023-11-19 07:48:08,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 3.305084745762712) internal successors, (195), 60 states have internal predecessors, (195), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-19 07:48:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1047 transitions. [2023-11-19 07:48:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-19 07:48:08,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:08,636 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 4, 4, 4, 2, 2, 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 07:48:08,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-19 07:48:08,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:48:08,842 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:48:08,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash 574696048, now seen corresponding path program 1 times [2023-11-19 07:48:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:08,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096341872] [2023-11-19 07:48:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:08,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:08,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895386592] [2023-11-19 07:48:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:08,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:08,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:08,860 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:08,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:48:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:08,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:48:08,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 3 proven. 832 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:48:09,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 3 proven. 468 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-19 07:48:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096341872] [2023-11-19 07:48:10,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895386592] [2023-11-19 07:48:10,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895386592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:10,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:10,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32] total 62 [2023-11-19 07:48:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066946187] [2023-11-19 07:48:10,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-19 07:48:10,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:10,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-19 07:48:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=883, Invalid=2899, Unknown=0, NotChecked=0, Total=3782 [2023-11-19 07:48:10,590 INFO L87 Difference]: Start difference. First operand 931 states and 1047 transitions. Second operand has 62 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 30 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2023-11-19 07:48:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:13,177 INFO L93 Difference]: Finished difference Result 1786 states and 2034 transitions. [2023-11-19 07:48:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-11-19 07:48:13,177 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 30 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) Word has length 170 [2023-11-19 07:48:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:13,183 INFO L225 Difference]: With dead ends: 1786 [2023-11-19 07:48:13,183 INFO L226 Difference]: Without dead ends: 1443 [2023-11-19 07:48:13,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5784 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4869, Invalid=16593, Unknown=0, NotChecked=0, Total=21462 [2023-11-19 07:48:13,188 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 568 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:13,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 529 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:48:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-11-19 07:48:13,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1301. [2023-11-19 07:48:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1301 states, 1040 states have (on average 1.1423076923076922) internal successors, (1188), 1045 states have internal predecessors, (1188), 132 states have call successors, (132), 126 states have call predecessors, (132), 126 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) [2023-11-19 07:48:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1301 states to 1301 states and 1452 transitions. [2023-11-19 07:48:13,325 INFO L78 Accepts]: Start accepts. Automaton has 1301 states and 1452 transitions. Word has length 170 [2023-11-19 07:48:13,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:13,326 INFO L495 AbstractCegarLoop]: Abstraction has 1301 states and 1452 transitions. [2023-11-19 07:48:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.3548387096774195) internal successors, (208), 62 states have internal predecessors, (208), 30 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2023-11-19 07:48:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1301 states and 1452 transitions. [2023-11-19 07:48:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-19 07:48:13,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:13,331 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 12, 12, 12, 11, 11, 11, 10, 4, 4, 4, 3, 3, 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] [2023-11-19 07:48:13,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-19 07:48:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:48:13,539 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:48:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -516556824, now seen corresponding path program 1 times [2023-11-19 07:48:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872061484] [2023-11-19 07:48:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:13,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:13,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7507650] [2023-11-19 07:48:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:13,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:13,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:13,555 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:13,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 07:48:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:13,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 07:48:13,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 14 proven. 806 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:48:14,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 14 proven. 386 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-11-19 07:48:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872061484] [2023-11-19 07:48:15,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:15,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7507650] [2023-11-19 07:48:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7507650] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:15,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 66 [2023-11-19 07:48:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203057587] [2023-11-19 07:48:15,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:15,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-19 07:48:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-19 07:48:15,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=913, Invalid=3377, Unknown=0, NotChecked=0, Total=4290 [2023-11-19 07:48:15,344 INFO L87 Difference]: Start difference. First operand 1301 states and 1452 transitions. Second operand has 66 states, 66 states have (on average 3.409090909090909) internal successors, (225), 66 states have internal predecessors, (225), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-11-19 07:48:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:17,939 INFO L93 Difference]: Finished difference Result 2331 states and 2623 transitions. [2023-11-19 07:48:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-11-19 07:48:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.409090909090909) internal successors, (225), 66 states have internal predecessors, (225), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) Word has length 184 [2023-11-19 07:48:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:17,950 INFO L225 Difference]: With dead ends: 2331 [2023-11-19 07:48:17,951 INFO L226 Difference]: Without dead ends: 1988 [2023-11-19 07:48:17,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5137 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4456, Invalid=15566, Unknown=0, NotChecked=0, Total=20022 [2023-11-19 07:48:17,954 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 620 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:17,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 574 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:48:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2023-11-19 07:48:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1779. [2023-11-19 07:48:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1424 states have (on average 1.1334269662921348) internal successors, (1614), 1429 states have internal predecessors, (1614), 179 states have call successors, (179), 173 states have call predecessors, (179), 173 states have return successors, (179), 176 states have call predecessors, (179), 179 states have call successors, (179) [2023-11-19 07:48:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 1972 transitions. [2023-11-19 07:48:18,183 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 1972 transitions. Word has length 184 [2023-11-19 07:48:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:18,184 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 1972 transitions. [2023-11-19 07:48:18,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.409090909090909) internal successors, (225), 66 states have internal predecessors, (225), 32 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2023-11-19 07:48:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 1972 transitions. [2023-11-19 07:48:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-11-19 07:48:18,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:18,190 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 12, 12, 12, 12, 12, 12, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:18,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-19 07:48:18,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:48:18,411 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:48:18,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash 961342747, now seen corresponding path program 1 times [2023-11-19 07:48:18,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315011810] [2023-11-19 07:48:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:18,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:18,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899253612] [2023-11-19 07:48:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:18,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:18,427 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:18,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0f54b20-08ce-4a84-a401-86e52e3db22b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-19 07:48:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:18,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 07:48:18,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 6 proven. 976 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:48:19,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 6 proven. 432 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2023-11-19 07:48:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315011810] [2023-11-19 07:48:20,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899253612] [2023-11-19 07:48:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899253612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:20,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:20,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38] total 74 [2023-11-19 07:48:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275081237] [2023-11-19 07:48:20,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-11-19 07:48:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-11-19 07:48:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=4317, Unknown=0, NotChecked=0, Total=5402 [2023-11-19 07:48:20,623 INFO L87 Difference]: Start difference. First operand 1779 states and 1972 transitions. Second operand has 74 states, 74 states have (on average 3.3378378378378377) internal successors, (247), 74 states have internal predecessors, (247), 36 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42)