./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.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_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/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_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/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_f00166fd-5749-4a20-a69e-8b09bb8e3947/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 1eba5bc7e50ef659abfe155713ae512eb1ae4032ecb78db63a02f9acbcdf9dbe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:36:37,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:36:37,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:36:37,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:36:37,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:36:37,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:36:37,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:36:37,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:36:37,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:36:37,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:36:37,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:36:37,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:36:37,606 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:36:37,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:36:37,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:36:37,609 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:36:37,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:36:37,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:36:37,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:36:37,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:36:37,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:36:37,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:36:37,612 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:36:37,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:36:37,613 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:36:37,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:36:37,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:36:37,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:36:37,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:36:37,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:36:37,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:37,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:36:37,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:36:37,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:36:37,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:36:37,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:36:37,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:36:37,619 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:36:37,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:36:37,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:36:37,619 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:36:37,620 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_f00166fd-5749-4a20-a69e-8b09bb8e3947/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eba5bc7e50ef659abfe155713ae512eb1ae4032ecb78db63a02f9acbcdf9dbe [2023-11-19 07:36:37,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:36:37,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:36:37,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:36:37,955 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:36:37,956 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:36:37,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c [2023-11-19 07:36:41,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:36:41,356 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:36:41,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c [2023-11-19 07:36:41,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/data/e77b7e973/56d62c1f67754a44a6b663e8f22a6c8e/FLAG8c63a20b2 [2023-11-19 07:36:41,384 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/data/e77b7e973/56d62c1f67754a44a6b663e8f22a6c8e [2023-11-19 07:36:41,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:36:41,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:36:41,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:41,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:36:41,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:36:41,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db0a7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41, skipping insertion in model container [2023-11-19 07:36:41,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:36:41,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:41,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:36:41,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:36:41,699 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:36:41,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41 WrapperNode [2023-11-19 07:36:41,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:36:41,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:41,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:36:41,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:36:41,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,762 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2023-11-19 07:36:41,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:36:41,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:36:41,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:36:41,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:36:41,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:36:41,806 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:36:41,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:36:41,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:36:41,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (1/1) ... [2023-11-19 07:36:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:36:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:41,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:36:41,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:36:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:36:41,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:36:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:36:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:36:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:36:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:36:41,991 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:36:41,994 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:36:42,432 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:36:42,442 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:36:42,442 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:36:42,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:42 BoogieIcfgContainer [2023-11-19 07:36:42,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:36:42,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:36:42,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:36:42,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:36:42,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:41" (1/3) ... [2023-11-19 07:36:42,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3ad46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:42, skipping insertion in model container [2023-11-19 07:36:42,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:41" (2/3) ... [2023-11-19 07:36:42,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3ad46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:36:42, skipping insertion in model container [2023-11-19 07:36:42,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:36:42" (3/3) ... [2023-11-19 07:36:42,457 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound5.c [2023-11-19 07:36:42,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:36:42,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 07:36:42,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:36:42,532 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;@2993105f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:36:42,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-11-19 07:36:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 75 states have internal predecessors, (84), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:36:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:36:42,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:42,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:36:42,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:42,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash 889508776, now seen corresponding path program 1 times [2023-11-19 07:36:42,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:42,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208792994] [2023-11-19 07:36:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:42,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:42,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:42,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208792994] [2023-11-19 07:36:42,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208792994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:42,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:42,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:42,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922074050] [2023-11-19 07:36:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:42,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:36:42,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:42,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:36:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:42,760 INFO L87 Difference]: Start difference. First operand has 84 states, 47 states have (on average 1.7872340425531914) internal successors, (84), 75 states have internal predecessors, (84), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:42,795 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2023-11-19 07:36:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:36:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 07:36:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:42,804 INFO L225 Difference]: With dead ends: 164 [2023-11-19 07:36:42,804 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:36:42,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:36:42,811 INFO L413 NwaCegarLoop]: 93 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, 93 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 07:36:42,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:42,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:36:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-19 07:36:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 69 states have internal predecessors, (74), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:36:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2023-11-19 07:36:42,874 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 6 [2023-11-19 07:36:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:42,874 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2023-11-19 07:36:42,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:42,875 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2023-11-19 07:36:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 07:36:42,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:42,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:36:42,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:42,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:42,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash 889568358, now seen corresponding path program 1 times [2023-11-19 07:36:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:42,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303069745] [2023-11-19 07:36:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:43,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303069745] [2023-11-19 07:36:43,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303069745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:43,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775260859] [2023-11-19 07:36:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:43,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:43,015 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:43,073 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2023-11-19 07:36:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:43,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 07:36:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:43,075 INFO L225 Difference]: With dead ends: 132 [2023-11-19 07:36:43,075 INFO L226 Difference]: Without dead ends: 80 [2023-11-19 07:36:43,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:43,078 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 4 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:43,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 231 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-19 07:36:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-19 07:36:43,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 73 states have internal predecessors, (78), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 07:36:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2023-11-19 07:36:43,091 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 6 [2023-11-19 07:36:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:43,091 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2023-11-19 07:36:43,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2023-11-19 07:36:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:36:43,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:43,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:43,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:43,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,094 INFO L85 PathProgramCache]: Analyzing trace with hash 667309322, now seen corresponding path program 1 times [2023-11-19 07:36:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986473948] [2023-11-19 07:36:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:43,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152716007] [2023-11-19 07:36:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:43,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:43,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:36:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:43,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:36:43,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:43,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986473948] [2023-11-19 07:36:43,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152716007] [2023-11-19 07:36:43,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152716007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:43,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385263965] [2023-11-19 07:36:43,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:43,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:43,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:43,253 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:43,328 INFO L93 Difference]: Finished difference Result 173 states and 193 transitions. [2023-11-19 07:36:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-19 07:36:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:43,334 INFO L225 Difference]: With dead ends: 173 [2023-11-19 07:36:43,334 INFO L226 Difference]: Without dead ends: 119 [2023-11-19 07:36:43,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:43,336 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 34 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:43,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 137 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-19 07:36:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2023-11-19 07:36:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.65625) internal successors, (106), 91 states have internal predecessors, (106), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2023-11-19 07:36:43,365 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 19 [2023-11-19 07:36:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:43,371 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2023-11-19 07:36:43,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:36:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2023-11-19 07:36:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 07:36:43,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:43,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:43,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:36:43,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:36:43,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:43,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:43,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1596807332, now seen corresponding path program 1 times [2023-11-19 07:36:43,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:43,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684389579] [2023-11-19 07:36:43,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:43,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180629739] [2023-11-19 07:36:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:43,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:43,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:43,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:43,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:36:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:43,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:36:43,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:43,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:43,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:43,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684389579] [2023-11-19 07:36:43,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180629739] [2023-11-19 07:36:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180629739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:43,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:43,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:43,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854565541] [2023-11-19 07:36:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:43,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:43,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:43,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:43,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:43,790 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:43,957 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2023-11-19 07:36:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 07:36:43,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:43,959 INFO L225 Difference]: With dead ends: 103 [2023-11-19 07:36:43,959 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 07:36:43,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:43,961 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:43,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 71 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:36:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 07:36:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-19 07:36:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.609375) internal successors, (103), 89 states have internal predecessors, (103), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2023-11-19 07:36:43,976 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 27 [2023-11-19 07:36:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:43,976 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2023-11-19 07:36:43,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:43,977 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2023-11-19 07:36:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:36:43,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:43,978 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:44,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:44,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:44,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:44,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2038581697, now seen corresponding path program 1 times [2023-11-19 07:36:44,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:44,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127114963] [2023-11-19 07:36:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:44,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:44,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544283227] [2023-11-19 07:36:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:44,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:44,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:36:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:44,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:36:44,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:44,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127114963] [2023-11-19 07:36:44,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544283227] [2023-11-19 07:36:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544283227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:44,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:44,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716457606] [2023-11-19 07:36:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:44,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:44,361 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:44,426 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2023-11-19 07:36:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:44,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-19 07:36:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:44,428 INFO L225 Difference]: With dead ends: 101 [2023-11-19 07:36:44,428 INFO L226 Difference]: Without dead ends: 99 [2023-11-19 07:36:44,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:36:44,430 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:44,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 205 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:44,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-19 07:36:44,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-19 07:36:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.5625) internal successors, (100), 87 states have internal predecessors, (100), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2023-11-19 07:36:44,445 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 28 [2023-11-19 07:36:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:44,446 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2023-11-19 07:36:44,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2023-11-19 07:36:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:36:44,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:44,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:44,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:44,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:44,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:44,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:44,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2038580191, now seen corresponding path program 1 times [2023-11-19 07:36:44,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:44,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737571029] [2023-11-19 07:36:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:44,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:44,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137566904] [2023-11-19 07:36:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:44,676 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:44,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:36:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:44,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:36:44,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:44,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737571029] [2023-11-19 07:36:44,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137566904] [2023-11-19 07:36:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137566904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:44,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:44,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674342123] [2023-11-19 07:36:44,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:44,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:44,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:44,810 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:44,885 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2023-11-19 07:36:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:44,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-19 07:36:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:44,890 INFO L225 Difference]: With dead ends: 113 [2023-11-19 07:36:44,890 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 07:36:44,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:44,891 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:44,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 133 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 07:36:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2023-11-19 07:36:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.546875) internal successors, (99), 87 states have internal predecessors, (99), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 119 transitions. [2023-11-19 07:36:44,926 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 119 transitions. Word has length 28 [2023-11-19 07:36:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:44,927 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 119 transitions. [2023-11-19 07:36:44,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:44,927 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 119 transitions. [2023-11-19 07:36:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:36:44,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:44,928 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:44,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:45,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:45,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1228476917, now seen corresponding path program 1 times [2023-11-19 07:36:45,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794485679] [2023-11-19 07:36:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:45,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:45,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170318462] [2023-11-19 07:36:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:45,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:45,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:45,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:36:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:45,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:36:45,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:45,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:45,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:45,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794485679] [2023-11-19 07:36:45,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:45,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170318462] [2023-11-19 07:36:45,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170318462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:45,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:45,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168870830] [2023-11-19 07:36:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:45,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:45,317 INFO L87 Difference]: Start difference. First operand 99 states and 119 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:45,436 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2023-11-19 07:36:45,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:36:45,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-11-19 07:36:45,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:45,438 INFO L225 Difference]: With dead ends: 116 [2023-11-19 07:36:45,439 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:36:45,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 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 07:36:45,441 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 14 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:45,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 344 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:36:45,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2023-11-19 07:36:45,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.492537313432836) internal successors, (100), 90 states have internal predecessors, (100), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:36:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2023-11-19 07:36:45,457 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 29 [2023-11-19 07:36:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:45,458 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2023-11-19 07:36:45,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:45,458 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2023-11-19 07:36:45,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:36:45,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:45,460 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 07:36:45,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:45,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:45,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:45,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:45,669 INFO L85 PathProgramCache]: Analyzing trace with hash -549686313, now seen corresponding path program 1 times [2023-11-19 07:36:45,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:45,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487789763] [2023-11-19 07:36:45,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:45,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:45,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189709608] [2023-11-19 07:36:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:45,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:45,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:45,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:45,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:36:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:45,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:45,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:45,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:45,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:45,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487789763] [2023-11-19 07:36:45,804 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:45,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189709608] [2023-11-19 07:36:45,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189709608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:45,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:45,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374411126] [2023-11-19 07:36:45,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:45,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:45,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:45,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:45,807 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:45,881 INFO L93 Difference]: Finished difference Result 147 states and 168 transitions. [2023-11-19 07:36:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:45,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2023-11-19 07:36:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:45,883 INFO L225 Difference]: With dead ends: 147 [2023-11-19 07:36:45,884 INFO L226 Difference]: Without dead ends: 143 [2023-11-19 07:36:45,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:45,886 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:45,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 102 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-19 07:36:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 123. [2023-11-19 07:36:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 85 states have (on average 1.4941176470588236) internal successors, (127), 108 states have internal predecessors, (127), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 151 transitions. [2023-11-19 07:36:45,924 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 151 transitions. Word has length 31 [2023-11-19 07:36:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:45,927 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 151 transitions. [2023-11-19 07:36:45,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 151 transitions. [2023-11-19 07:36:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:36:45,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:45,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 07:36:45,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:46,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:36:46,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:46,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:46,152 INFO L85 PathProgramCache]: Analyzing trace with hash 32433593, now seen corresponding path program 1 times [2023-11-19 07:36:46,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:46,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402545464] [2023-11-19 07:36:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:46,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:46,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:46,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942179970] [2023-11-19 07:36:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:46,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:46,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:46,167 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:46,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:36:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:46,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:46,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:46,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402545464] [2023-11-19 07:36:46,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942179970] [2023-11-19 07:36:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942179970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:46,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596343193] [2023-11-19 07:36:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:46,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:46,291 INFO L87 Difference]: Start difference. First operand 123 states and 151 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:46,378 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2023-11-19 07:36:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:46,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-19 07:36:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:46,380 INFO L225 Difference]: With dead ends: 139 [2023-11-19 07:36:46,380 INFO L226 Difference]: Without dead ends: 138 [2023-11-19 07:36:46,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 07:36:46,381 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 91 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:46,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 97 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-19 07:36:46,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 123. [2023-11-19 07:36:46,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 108 states have internal predecessors, (125), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:36:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2023-11-19 07:36:46,397 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 33 [2023-11-19 07:36:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:46,397 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2023-11-19 07:36:46,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2023-11-19 07:36:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:36:46,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:46,399 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:36:46,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:46,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:46,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:46,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash 185732939, now seen corresponding path program 1 times [2023-11-19 07:36:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:46,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306162335] [2023-11-19 07:36:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:46,625 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:46,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955169286] [2023-11-19 07:36:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:46,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:46,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:46,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:36:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:46,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:36:46,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:46,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:46,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:46,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306162335] [2023-11-19 07:36:46,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955169286] [2023-11-19 07:36:46,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955169286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:46,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:46,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-19 07:36:46,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206282711] [2023-11-19 07:36:46,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:36:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:36:46,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:36:46,855 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:36:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:47,035 INFO L93 Difference]: Finished difference Result 249 states and 300 transitions. [2023-11-19 07:36:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 33 [2023-11-19 07:36:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:47,038 INFO L225 Difference]: With dead ends: 249 [2023-11-19 07:36:47,038 INFO L226 Difference]: Without dead ends: 180 [2023-11-19 07:36:47,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:36:47,041 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 65 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:47,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 435 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-19 07:36:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 162. [2023-11-19 07:36:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 116 states have (on average 1.456896551724138) internal successors, (169), 139 states have internal predecessors, (169), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:36:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 205 transitions. [2023-11-19 07:36:47,071 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 205 transitions. Word has length 33 [2023-11-19 07:36:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:47,072 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 205 transitions. [2023-11-19 07:36:47,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:36:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 205 transitions. [2023-11-19 07:36:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:36:47,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:47,075 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 07:36:47,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:36:47,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:47,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1005441480, now seen corresponding path program 1 times [2023-11-19 07:36:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802609361] [2023-11-19 07:36:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:47,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:47,312 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940715966] [2023-11-19 07:36:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:47,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:47,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:47,314 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:47,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:36:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:47,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:36:47,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:36:47,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:47,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802609361] [2023-11-19 07:36:47,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:47,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940715966] [2023-11-19 07:36:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940715966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861363875] [2023-11-19 07:36:47,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:47,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:47,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:47,553 INFO L87 Difference]: Start difference. First operand 162 states and 205 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:47,703 INFO L93 Difference]: Finished difference Result 169 states and 210 transitions. [2023-11-19 07:36:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2023-11-19 07:36:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:47,705 INFO L225 Difference]: With dead ends: 169 [2023-11-19 07:36:47,705 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 07:36:47,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 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 07:36:47,706 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 26 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:47,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 139 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 07:36:47,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2023-11-19 07:36:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 119 states have (on average 1.4369747899159664) internal successors, (171), 142 states have internal predecessors, (171), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:36:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 207 transitions. [2023-11-19 07:36:47,727 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 207 transitions. Word has length 34 [2023-11-19 07:36:47,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:47,727 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 207 transitions. [2023-11-19 07:36:47,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:36:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 207 transitions. [2023-11-19 07:36:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:36:47,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:47,729 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:47,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 07:36:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:36:47,950 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:47,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1132558923, now seen corresponding path program 1 times [2023-11-19 07:36:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:47,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780194267] [2023-11-19 07:36:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:47,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:47,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:47,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130943437] [2023-11-19 07:36:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:47,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:47,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:47,966 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:48,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:36:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:48,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:48,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 07:36:48,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:48,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:48,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780194267] [2023-11-19 07:36:48,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:48,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130943437] [2023-11-19 07:36:48,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130943437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:48,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513145973] [2023-11-19 07:36:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:48,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:48,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:48,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:48,077 INFO L87 Difference]: Start difference. First operand 165 states and 207 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:36:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:48,152 INFO L93 Difference]: Finished difference Result 192 states and 238 transitions. [2023-11-19 07:36:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2023-11-19 07:36:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:48,154 INFO L225 Difference]: With dead ends: 192 [2023-11-19 07:36:48,154 INFO L226 Difference]: Without dead ends: 182 [2023-11-19 07:36:48,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 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 07:36:48,156 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 72 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:48,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 152 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-19 07:36:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2023-11-19 07:36:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 130 states have (on average 1.353846153846154) internal successors, (176), 149 states have internal predecessors, (176), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:36:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 216 transitions. [2023-11-19 07:36:48,177 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 216 transitions. Word has length 45 [2023-11-19 07:36:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:48,177 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 216 transitions. [2023-11-19 07:36:48,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:36:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 216 transitions. [2023-11-19 07:36:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:36:48,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:48,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:48,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:48,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:48,399 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:48,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash 749588304, now seen corresponding path program 1 times [2023-11-19 07:36:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:48,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342041338] [2023-11-19 07:36:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:48,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:48,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187579724] [2023-11-19 07:36:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:48,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:48,413 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:48,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:36:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:48,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:48,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 07:36:48,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:48,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342041338] [2023-11-19 07:36:48,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:48,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187579724] [2023-11-19 07:36:48,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187579724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:48,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:48,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2023-11-19 07:36:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988357648] [2023-11-19 07:36:48,622 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:48,624 INFO L87 Difference]: Start difference. First operand 174 states and 216 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:36:48,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:48,717 INFO L93 Difference]: Finished difference Result 265 states and 322 transitions. [2023-11-19 07:36:48,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:48,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2023-11-19 07:36:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:48,721 INFO L225 Difference]: With dead ends: 265 [2023-11-19 07:36:48,721 INFO L226 Difference]: Without dead ends: 261 [2023-11-19 07:36:48,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:48,723 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 100 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:48,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 175 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:48,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-19 07:36:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 227. [2023-11-19 07:36:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 177 states have (on average 1.3728813559322033) internal successors, (243), 196 states have internal predecessors, (243), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:36:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 295 transitions. [2023-11-19 07:36:48,752 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 295 transitions. Word has length 46 [2023-11-19 07:36:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:48,753 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 295 transitions. [2023-11-19 07:36:48,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:36:48,754 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 295 transitions. [2023-11-19 07:36:48,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:36:48,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:48,756 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1] [2023-11-19 07:36:48,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:48,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:48,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:48,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1118998551, now seen corresponding path program 1 times [2023-11-19 07:36:48,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:48,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566652055] [2023-11-19 07:36:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:48,995 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085233077] [2023-11-19 07:36:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:48,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:48,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:49,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:36:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:49,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 07:36:49,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566652055] [2023-11-19 07:36:49,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085233077] [2023-11-19 07:36:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085233077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:49,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:49,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770298962] [2023-11-19 07:36:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:49,117 INFO L87 Difference]: Start difference. First operand 227 states and 295 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:49,296 INFO L93 Difference]: Finished difference Result 242 states and 306 transitions. [2023-11-19 07:36:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:49,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2023-11-19 07:36:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:49,302 INFO L225 Difference]: With dead ends: 242 [2023-11-19 07:36:49,303 INFO L226 Difference]: Without dead ends: 225 [2023-11-19 07:36:49,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 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 07:36:49,304 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 49 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:49,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 135 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:36:49,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-19 07:36:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 212. [2023-11-19 07:36:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 164 states have (on average 1.396341463414634) internal successors, (229), 183 states have internal predecessors, (229), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:36:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 277 transitions. [2023-11-19 07:36:49,332 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 277 transitions. Word has length 50 [2023-11-19 07:36:49,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:49,332 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 277 transitions. [2023-11-19 07:36:49,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 277 transitions. [2023-11-19 07:36:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 07:36:49,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:49,334 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:49,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:49,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:36:49,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:49,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 287436800, now seen corresponding path program 1 times [2023-11-19 07:36:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932077392] [2023-11-19 07:36:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:49,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:49,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985431447] [2023-11-19 07:36:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:49,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:49,570 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:49,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:36:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:49,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:36:49,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:36:49,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:36:49,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:49,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932077392] [2023-11-19 07:36:49,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:49,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985431447] [2023-11-19 07:36:49,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985431447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:49,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:49,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-19 07:36:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640922762] [2023-11-19 07:36:49,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:49,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:49,768 INFO L87 Difference]: Start difference. First operand 212 states and 277 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:50,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:50,019 INFO L93 Difference]: Finished difference Result 353 states and 432 transitions. [2023-11-19 07:36:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:50,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 54 [2023-11-19 07:36:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:50,023 INFO L225 Difference]: With dead ends: 353 [2023-11-19 07:36:50,023 INFO L226 Difference]: Without dead ends: 351 [2023-11-19 07:36:50,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:50,026 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 228 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:50,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 215 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:36:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-19 07:36:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 274. [2023-11-19 07:36:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 217 states have (on average 1.4101382488479262) internal successors, (306), 236 states have internal predecessors, (306), 33 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 07:36:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 372 transitions. [2023-11-19 07:36:50,060 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 372 transitions. Word has length 54 [2023-11-19 07:36:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:50,061 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 372 transitions. [2023-11-19 07:36:50,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 372 transitions. [2023-11-19 07:36:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 07:36:50,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:50,062 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:50,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-19 07:36:50,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:36:50,276 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:50,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash 320559606, now seen corresponding path program 1 times [2023-11-19 07:36:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:50,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380904750] [2023-11-19 07:36:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:50,293 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:50,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862597344] [2023-11-19 07:36:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:50,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:50,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:50,295 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:50,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:36:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:50,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:36:50,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:36:50,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:36:50,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:50,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380904750] [2023-11-19 07:36:50,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:50,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862597344] [2023-11-19 07:36:50,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862597344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:50,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-19 07:36:50,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462721174] [2023-11-19 07:36:50,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:50,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:36:50,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:36:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:50,622 INFO L87 Difference]: Start difference. First operand 274 states and 372 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:50,945 INFO L93 Difference]: Finished difference Result 321 states and 415 transitions. [2023-11-19 07:36:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:36:50,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 55 [2023-11-19 07:36:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:50,949 INFO L225 Difference]: With dead ends: 321 [2023-11-19 07:36:50,949 INFO L226 Difference]: Without dead ends: 315 [2023-11-19 07:36:50,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:36:50,951 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 127 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:50,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 549 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:50,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-19 07:36:50,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 297. [2023-11-19 07:36:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 238 states have (on average 1.3823529411764706) internal successors, (329), 257 states have internal predecessors, (329), 33 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 07:36:50,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 395 transitions. [2023-11-19 07:36:50,984 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 395 transitions. Word has length 55 [2023-11-19 07:36:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:50,985 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 395 transitions. [2023-11-19 07:36:50,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 395 transitions. [2023-11-19 07:36:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:36:50,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:50,987 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 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] [2023-11-19 07:36:51,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:51,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:51,208 INFO L85 PathProgramCache]: Analyzing trace with hash 770531943, now seen corresponding path program 1 times [2023-11-19 07:36:51,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:51,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365397722] [2023-11-19 07:36:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:51,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:51,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950924389] [2023-11-19 07:36:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:51,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:51,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:51,223 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:51,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:36:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:51,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:51,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:36:51,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:36:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365397722] [2023-11-19 07:36:51,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950924389] [2023-11-19 07:36:51,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950924389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:51,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:51,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:36:51,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755309717] [2023-11-19 07:36:51,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:51,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:36:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:36:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:51,625 INFO L87 Difference]: Start difference. First operand 297 states and 395 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:52,235 INFO L93 Difference]: Finished difference Result 379 states and 486 transitions. [2023-11-19 07:36:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:36:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 60 [2023-11-19 07:36:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:52,239 INFO L225 Difference]: With dead ends: 379 [2023-11-19 07:36:52,239 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 07:36:52,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:36:52,240 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 303 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:52,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 201 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:36:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 07:36:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 321. [2023-11-19 07:36:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 262 states have (on average 1.3740458015267176) internal successors, (360), 281 states have internal predecessors, (360), 33 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 07:36:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 426 transitions. [2023-11-19 07:36:52,282 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 426 transitions. Word has length 60 [2023-11-19 07:36:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:52,282 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 426 transitions. [2023-11-19 07:36:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 426 transitions. [2023-11-19 07:36:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:36:52,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:52,284 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:52,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:52,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:36:52,500 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:52,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash -966584528, now seen corresponding path program 1 times [2023-11-19 07:36:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:52,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769767074] [2023-11-19 07:36:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:52,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:52,512 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:52,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644077700] [2023-11-19 07:36:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:52,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:52,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:52,514 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:52,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:36:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:52,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:36:52,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:36:52,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 07:36:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769767074] [2023-11-19 07:36:52,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644077700] [2023-11-19 07:36:52,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644077700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:52,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:52,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2023-11-19 07:36:52,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681078380] [2023-11-19 07:36:52,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:52,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:36:52,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:52,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:36:52,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:36:52,838 INFO L87 Difference]: Start difference. First operand 321 states and 426 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:53,060 INFO L93 Difference]: Finished difference Result 484 states and 642 transitions. [2023-11-19 07:36:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:36:53,061 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 68 [2023-11-19 07:36:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:53,063 INFO L225 Difference]: With dead ends: 484 [2023-11-19 07:36:53,064 INFO L226 Difference]: Without dead ends: 334 [2023-11-19 07:36:53,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:36:53,065 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 44 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:53,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 472 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-19 07:36:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 327. [2023-11-19 07:36:53,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 268 states have (on average 1.3619402985074627) internal successors, (365), 287 states have internal predecessors, (365), 33 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 07:36:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 431 transitions. [2023-11-19 07:36:53,106 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 431 transitions. Word has length 68 [2023-11-19 07:36:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:53,106 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 431 transitions. [2023-11-19 07:36:53,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-19 07:36:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 431 transitions. [2023-11-19 07:36:53,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 07:36:53,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:53,108 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 07:36:53,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:53,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:36:53,324 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:53,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:53,325 INFO L85 PathProgramCache]: Analyzing trace with hash -281646737, now seen corresponding path program 2 times [2023-11-19 07:36:53,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:53,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400166130] [2023-11-19 07:36:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:53,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:53,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239625772] [2023-11-19 07:36:53,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:36:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:53,338 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:53,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:36:53,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:36:53,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:36:53,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:36:53,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 07:36:53,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400166130] [2023-11-19 07:36:53,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:53,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239625772] [2023-11-19 07:36:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239625772] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:36:53,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:36:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-19 07:36:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093613851] [2023-11-19 07:36:53,548 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:53,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:53,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:53,550 INFO L87 Difference]: Start difference. First operand 327 states and 431 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:36:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:53,706 INFO L93 Difference]: Finished difference Result 480 states and 616 transitions. [2023-11-19 07:36:53,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:53,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2023-11-19 07:36:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:53,710 INFO L225 Difference]: With dead ends: 480 [2023-11-19 07:36:53,711 INFO L226 Difference]: Without dead ends: 476 [2023-11-19 07:36:53,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:53,712 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 126 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:53,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 224 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-11-19 07:36:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 358. [2023-11-19 07:36:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 295 states have (on average 1.3389830508474576) internal successors, (395), 314 states have internal predecessors, (395), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:36:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 469 transitions. [2023-11-19 07:36:53,757 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 469 transitions. Word has length 72 [2023-11-19 07:36:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:53,758 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 469 transitions. [2023-11-19 07:36:53,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:36:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 469 transitions. [2023-11-19 07:36:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:36:53,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:53,760 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-11-19 07:36:53,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:53,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:53,976 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:53,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1910905065, now seen corresponding path program 1 times [2023-11-19 07:36:53,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:53,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330536035] [2023-11-19 07:36:53,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:53,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:54,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429005269] [2023-11-19 07:36:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:54,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:54,003 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:54,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:36:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:36:54,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-19 07:36:54,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:54,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330536035] [2023-11-19 07:36:54,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:54,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429005269] [2023-11-19 07:36:54,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429005269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:54,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:54,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:36:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523863908] [2023-11-19 07:36:54,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:54,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:36:54,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:36:54,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:54,089 INFO L87 Difference]: Start difference. First operand 358 states and 469 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:54,193 INFO L93 Difference]: Finished difference Result 358 states and 469 transitions. [2023-11-19 07:36:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:36:54,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 79 [2023-11-19 07:36:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:54,199 INFO L225 Difference]: With dead ends: 358 [2023-11-19 07:36:54,200 INFO L226 Difference]: Without dead ends: 357 [2023-11-19 07:36:54,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:36:54,201 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:54,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 118 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-19 07:36:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2023-11-19 07:36:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 295 states have (on average 1.3254237288135593) internal successors, (391), 313 states have internal predecessors, (391), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:36:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 465 transitions. [2023-11-19 07:36:54,263 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 465 transitions. Word has length 79 [2023-11-19 07:36:54,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:54,264 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 465 transitions. [2023-11-19 07:36:54,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:54,264 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 465 transitions. [2023-11-19 07:36:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:36:54,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:54,266 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:54,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:54,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:54,479 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:54,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash -891485006, now seen corresponding path program 1 times [2023-11-19 07:36:54,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737512398] [2023-11-19 07:36:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:54,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:54,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192479118] [2023-11-19 07:36:54,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:54,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:54,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:54,516 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:54,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:36:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:54,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:36:54,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 07:36:54,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 07:36:55,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737512398] [2023-11-19 07:36:55,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192479118] [2023-11-19 07:36:55,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192479118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:55,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:55,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-19 07:36:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974021989] [2023-11-19 07:36:55,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:55,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:36:55,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:55,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:36:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:36:55,534 INFO L87 Difference]: Start difference. First operand 357 states and 465 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-19 07:36:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:56,117 INFO L93 Difference]: Finished difference Result 556 states and 704 transitions. [2023-11-19 07:36:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 80 [2023-11-19 07:36:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:56,122 INFO L225 Difference]: With dead ends: 556 [2023-11-19 07:36:56,122 INFO L226 Difference]: Without dead ends: 484 [2023-11-19 07:36:56,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:36:56,124 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 333 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:56,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 382 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:36:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-11-19 07:36:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 324. [2023-11-19 07:36:56,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 265 states have (on average 1.3018867924528301) internal successors, (345), 282 states have internal predecessors, (345), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 415 transitions. [2023-11-19 07:36:56,175 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 415 transitions. Word has length 80 [2023-11-19 07:36:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:56,176 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 415 transitions. [2023-11-19 07:36:56,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-19 07:36:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 415 transitions. [2023-11-19 07:36:56,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:36:56,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:56,177 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:56,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:56,397 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:56,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1866231285, now seen corresponding path program 1 times [2023-11-19 07:36:56,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:56,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472389600] [2023-11-19 07:36:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:56,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:56,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715320608] [2023-11-19 07:36:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:56,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:56,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:56,412 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:56,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:36:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:56,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:36:56,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-19 07:36:56,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:56,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472389600] [2023-11-19 07:36:56,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:56,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715320608] [2023-11-19 07:36:56,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715320608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:56,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:56,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:56,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034410259] [2023-11-19 07:36:56,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:56,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:36:56,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:36:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:56,669 INFO L87 Difference]: Start difference. First operand 324 states and 415 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:56,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:56,849 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2023-11-19 07:36:56,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:56,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 81 [2023-11-19 07:36:56,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:56,852 INFO L225 Difference]: With dead ends: 356 [2023-11-19 07:36:56,852 INFO L226 Difference]: Without dead ends: 355 [2023-11-19 07:36:56,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:36:56,855 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 87 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:56,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 123 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:56,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-19 07:36:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 332. [2023-11-19 07:36:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 273 states have (on average 1.293040293040293) internal successors, (353), 290 states have internal predecessors, (353), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 423 transitions. [2023-11-19 07:36:56,909 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 423 transitions. Word has length 81 [2023-11-19 07:36:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:56,909 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 423 transitions. [2023-11-19 07:36:56,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 423 transitions. [2023-11-19 07:36:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 07:36:56,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:56,911 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:56,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:57,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:57,124 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:57,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2018594860, now seen corresponding path program 1 times [2023-11-19 07:36:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:57,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432007855] [2023-11-19 07:36:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,132 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:57,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935219127] [2023-11-19 07:36:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:57,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:57,139 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:57,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:36:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:57,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:36:57,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-19 07:36:57,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:36:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432007855] [2023-11-19 07:36:57,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935219127] [2023-11-19 07:36:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935219127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:57,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:36:57,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044967627] [2023-11-19 07:36:57,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:57,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:36:57,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:57,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:36:57,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:36:57,343 INFO L87 Difference]: Start difference. First operand 332 states and 423 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:57,563 INFO L93 Difference]: Finished difference Result 341 states and 428 transitions. [2023-11-19 07:36:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:36:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 82 [2023-11-19 07:36:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:57,567 INFO L225 Difference]: With dead ends: 341 [2023-11-19 07:36:57,567 INFO L226 Difference]: Without dead ends: 339 [2023-11-19 07:36:57,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 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 07:36:57,568 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 55 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:57,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 93 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:36:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-19 07:36:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 334. [2023-11-19 07:36:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 275 states have (on average 1.28) internal successors, (352), 292 states have internal predecessors, (352), 35 states have call successors, (35), 6 states have call predecessors, (35), 6 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 422 transitions. [2023-11-19 07:36:57,623 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 422 transitions. Word has length 82 [2023-11-19 07:36:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:57,623 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 422 transitions. [2023-11-19 07:36:57,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:36:57,623 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 422 transitions. [2023-11-19 07:36:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 07:36:57,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:57,625 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:57,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:57,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:57,840 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:57,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1041574332, now seen corresponding path program 1 times [2023-11-19 07:36:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:57,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721501946] [2023-11-19 07:36:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:57,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681966252] [2023-11-19 07:36:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:57,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:57,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:57,853 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:57,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:36:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:57,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:36:57,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:36:58,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:36:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-19 07:36:58,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:58,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721501946] [2023-11-19 07:36:58,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:36:58,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681966252] [2023-11-19 07:36:58,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681966252] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:36:58,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:36:58,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 13 [2023-11-19 07:36:58,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772467757] [2023-11-19 07:36:58,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:36:58,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:36:58,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:58,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:36:58,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:36:58,234 INFO L87 Difference]: Start difference. First operand 334 states and 422 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-19 07:36:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:58,532 INFO L93 Difference]: Finished difference Result 370 states and 459 transitions. [2023-11-19 07:36:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 07:36:58,533 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 86 [2023-11-19 07:36:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:58,535 INFO L225 Difference]: With dead ends: 370 [2023-11-19 07:36:58,536 INFO L226 Difference]: Without dead ends: 358 [2023-11-19 07:36:58,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:36:58,537 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 67 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:58,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 388 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:36:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-19 07:36:58,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2023-11-19 07:36:58,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 296 states have (on average 1.2567567567567568) internal successors, (372), 313 states have internal predecessors, (372), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-19 07:36:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 442 transitions. [2023-11-19 07:36:58,587 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 442 transitions. Word has length 86 [2023-11-19 07:36:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:58,587 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 442 transitions. [2023-11-19 07:36:58,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-19 07:36:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 442 transitions. [2023-11-19 07:36:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:36:58,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:58,589 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2023-11-19 07:36:58,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:36:58,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:36:58,809 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:36:58,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:58,809 INFO L85 PathProgramCache]: Analyzing trace with hash 595065312, now seen corresponding path program 1 times [2023-11-19 07:36:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26571897] [2023-11-19 07:36:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:58,826 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:36:58,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805125538] [2023-11-19 07:36:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:36:58,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:36:58,827 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:36:58,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:36:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:58,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:36:58,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:36:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 07:36:59,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26571897] [2023-11-19 07:37:00,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:00,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805125538] [2023-11-19 07:37:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805125538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:00,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:37:00,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070599180] [2023-11-19 07:37:00,027 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:00,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:37:00,030 INFO L87 Difference]: Start difference. First operand 356 states and 442 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:37:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:00,512 INFO L93 Difference]: Finished difference Result 411 states and 501 transitions. [2023-11-19 07:37:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:37:00,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 87 [2023-11-19 07:37:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:00,520 INFO L225 Difference]: With dead ends: 411 [2023-11-19 07:37:00,521 INFO L226 Difference]: Without dead ends: 410 [2023-11-19 07:37:00,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:37:00,522 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 92 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:00,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 291 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:00,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-19 07:37:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 374. [2023-11-19 07:37:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 312 states have (on average 1.2596153846153846) internal successors, (393), 329 states have internal predecessors, (393), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:37:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 467 transitions. [2023-11-19 07:37:00,591 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 467 transitions. Word has length 87 [2023-11-19 07:37:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:00,591 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 467 transitions. [2023-11-19 07:37:00,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:37:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 467 transitions. [2023-11-19 07:37:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:37:00,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:00,598 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-11-19 07:37:00,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:00,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:37:00,812 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:37:00,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1267155581, now seen corresponding path program 1 times [2023-11-19 07:37:00,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:00,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336471699] [2023-11-19 07:37:00,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:00,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:00,825 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547834006] [2023-11-19 07:37:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:00,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:00,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:00,827 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:00,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:37:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:00,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:37:00,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 07:37:01,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:01,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336471699] [2023-11-19 07:37:01,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:01,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547834006] [2023-11-19 07:37:01,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547834006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:01,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:01,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:37:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032570232] [2023-11-19 07:37:01,788 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:01,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:01,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:01,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:01,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:37:01,790 INFO L87 Difference]: Start difference. First operand 374 states and 467 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:37:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:02,258 INFO L93 Difference]: Finished difference Result 392 states and 480 transitions. [2023-11-19 07:37:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:37:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-11-19 07:37:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:02,261 INFO L225 Difference]: With dead ends: 392 [2023-11-19 07:37:02,262 INFO L226 Difference]: Without dead ends: 391 [2023-11-19 07:37:02,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:37:02,263 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 44 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:02,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 279 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:37:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-19 07:37:02,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 374. [2023-11-19 07:37:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 312 states have (on average 1.2532051282051282) internal successors, (391), 329 states have internal predecessors, (391), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:37:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 465 transitions. [2023-11-19 07:37:02,315 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 465 transitions. Word has length 88 [2023-11-19 07:37:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:02,316 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 465 transitions. [2023-11-19 07:37:02,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:37:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 465 transitions. [2023-11-19 07:37:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-19 07:37:02,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:02,318 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2023-11-19 07:37:02,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:02,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:37:02,538 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:37:02,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash 627117442, now seen corresponding path program 1 times [2023-11-19 07:37:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164497403] [2023-11-19 07:37:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:02,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:02,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229082165] [2023-11-19 07:37:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:02,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:02,551 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:02,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:37:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:02,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:02,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-19 07:37:02,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:37:02,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:02,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164497403] [2023-11-19 07:37:02,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:02,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229082165] [2023-11-19 07:37:02,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229082165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:02,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:02,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:37:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884255633] [2023-11-19 07:37:02,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:02,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:37:02,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:02,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:37:02,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:37:02,665 INFO L87 Difference]: Start difference. First operand 374 states and 465 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:37:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:02,968 INFO L93 Difference]: Finished difference Result 384 states and 472 transitions. [2023-11-19 07:37:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:37:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 89 [2023-11-19 07:37:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:02,972 INFO L225 Difference]: With dead ends: 384 [2023-11-19 07:37:02,972 INFO L226 Difference]: Without dead ends: 382 [2023-11-19 07:37:02,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:02,973 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 64 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:02,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 97 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:37:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-19 07:37:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 373. [2023-11-19 07:37:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 312 states have (on average 1.2275641025641026) internal successors, (383), 328 states have internal predecessors, (383), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:37:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 457 transitions. [2023-11-19 07:37:03,025 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 457 transitions. Word has length 89 [2023-11-19 07:37:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:03,025 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 457 transitions. [2023-11-19 07:37:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-19 07:37:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 457 transitions. [2023-11-19 07:37:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:37:03,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:03,027 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2023-11-19 07:37:03,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:03,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:37:03,240 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:37:03,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2034195681, now seen corresponding path program 1 times [2023-11-19 07:37:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:03,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625619072] [2023-11-19 07:37:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:03,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:03,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133206428] [2023-11-19 07:37:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:03,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:03,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:03,265 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:03,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:37:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:03,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:37:03,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 07:37:04,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 07:37:09,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:09,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625619072] [2023-11-19 07:37:09,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133206428] [2023-11-19 07:37:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133206428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:09,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:37:09,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-19 07:37:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153020124] [2023-11-19 07:37:09,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:09,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:37:09,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:09,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:37:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:37:09,952 INFO L87 Difference]: Start difference. First operand 373 states and 457 transitions. Second operand has 20 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 20 states have internal predecessors, (100), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-19 07:37:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:20,317 INFO L93 Difference]: Finished difference Result 437 states and 518 transitions. [2023-11-19 07:37:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-19 07:37:20,317 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 20 states have internal predecessors, (100), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 90 [2023-11-19 07:37:20,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:37:20,320 INFO L225 Difference]: With dead ends: 437 [2023-11-19 07:37:20,321 INFO L226 Difference]: Without dead ends: 436 [2023-11-19 07:37:20,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=402, Invalid=858, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 07:37:20,322 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 441 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:37:20,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 404 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-19 07:37:20,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-19 07:37:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 381. [2023-11-19 07:37:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 320 states have (on average 1.2375) internal successors, (396), 336 states have internal predecessors, (396), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-19 07:37:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2023-11-19 07:37:20,381 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 90 [2023-11-19 07:37:20,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:37:20,381 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2023-11-19 07:37:20,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 20 states have internal predecessors, (100), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-19 07:37:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2023-11-19 07:37:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:37:20,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:37:20,383 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 07:37:20,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:20,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:37:20,604 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-11-19 07:37:20,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:20,605 INFO L85 PathProgramCache]: Analyzing trace with hash -861697330, now seen corresponding path program 3 times [2023-11-19 07:37:20,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:20,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237969929] [2023-11-19 07:37:20,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:20,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:20,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:37:20,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147130220] [2023-11-19 07:37:20,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:37:20,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:20,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:20,617 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:20,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f00166fd-5749-4a20-a69e-8b09bb8e3947/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 07:37:20,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:37:20,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:20,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:37:20,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 44 proven. 38 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-19 07:37:21,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:21,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:21,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237969929] [2023-11-19 07:37:21,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:37:21,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147130220] [2023-11-19 07:37:21,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147130220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:21,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:37:21,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:37:21,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509080732] [2023-11-19 07:37:21,546 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:21,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:37:21,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:21,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:37:21,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:37:21,547 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:37:24,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 07:37:26,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 07:37:28,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 07:37:30,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 07:37:33,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []