./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/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_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/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_774ed87c-6fab-4532-8574-b47f8940a3bd/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 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:37,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:37,369 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:54:37,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:37,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:37,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:37,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:37,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:37,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:37,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:37,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:37,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:37,425 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:37,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:37,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:54:37,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:37,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:37,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:37,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:37,430 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:54:37,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:37,431 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:54:37,431 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:54:37,432 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:37,432 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:37,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:54:37,433 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:37,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:37,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:37,435 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:37,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:37,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:37,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:37,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:54:37,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:37,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:37,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:37,438 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:54:37,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:37,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:37,438 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:37,439 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_774ed87c-6fab-4532-8574-b47f8940a3bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc [2023-11-19 07:54:37,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:37,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:37,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:37,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:37,753 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:37,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2023-11-19 07:54:40,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:41,119 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:41,120 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2023-11-19 07:54:41,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/data/0095ada9a/89fd24b6d37946e299373b329210e4a2/FLAG3abe3e158 [2023-11-19 07:54:41,161 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/data/0095ada9a/89fd24b6d37946e299373b329210e4a2 [2023-11-19 07:54:41,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:41,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:41,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:41,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:41,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:41,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55230975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41, skipping insertion in model container [2023-11-19 07:54:41,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:41,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:41,459 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:41,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:41,496 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:41,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41 WrapperNode [2023-11-19 07:54:41,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:41,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:41,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:41,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:41,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,535 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-19 07:54:41,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:41,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:41,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:41,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:41,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:41,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:41,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:41,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:41,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (1/1) ... [2023-11-19 07:54:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:41,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:41,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:41,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:54:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:54:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:54:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:54:41,717 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:41,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:42,009 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:42,020 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:42,020 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:54:42,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:42 BoogieIcfgContainer [2023-11-19 07:54:42,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:42,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:42,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:42,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:42,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:41" (1/3) ... [2023-11-19 07:54:42,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e816d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:42, skipping insertion in model container [2023-11-19 07:54:42,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:41" (2/3) ... [2023-11-19 07:54:42,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e816d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:42, skipping insertion in model container [2023-11-19 07:54:42,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:42" (3/3) ... [2023-11-19 07:54:42,035 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound20.c [2023-11-19 07:54:42,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:42,058 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:54:42,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:42,121 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;@20db0a3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:42,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-19 07:54:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 79 states have internal predecessors, (87), 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 07:54:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:54:42,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:42,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:42,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:42,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:42,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1983182931, now seen corresponding path program 1 times [2023-11-19 07:54:42,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:42,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76653703] [2023-11-19 07:54:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76653703] [2023-11-19 07:54:42,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:54:42,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310526965] [2023-11-19 07:54:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:42,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:42,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:42,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:42,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:54:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:42,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:54:42,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:54:42,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310526965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:42,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:42,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:42,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834820380] [2023-11-19 07:54:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:42,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:42,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:42,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:42,502 INFO L87 Difference]: Start difference. First operand has 92 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 79 states have internal predecessors, (87), 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:54:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:42,557 INFO L93 Difference]: Finished difference Result 180 states and 219 transitions. [2023-11-19 07:54:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:42,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-19 07:54:42,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:42,571 INFO L225 Difference]: With dead ends: 180 [2023-11-19 07:54:42,571 INFO L226 Difference]: Without dead ends: 85 [2023-11-19 07:54:42,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 07:54:42,582 INFO L413 NwaCegarLoop]: 100 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, 100 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 07:54:42,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:42,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-19 07:54:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-19 07:54:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:54:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2023-11-19 07:54:42,653 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 21 [2023-11-19 07:54:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:42,654 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2023-11-19 07:54:42,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:54:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2023-11-19 07:54:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:54:42,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:42,658 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:42,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:54:42,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:54:42,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:42,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1153157909, now seen corresponding path program 1 times [2023-11-19 07:54:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856452522] [2023-11-19 07:54:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:42,898 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:42,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097943422] [2023-11-19 07:54:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:42,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:42,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:42,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:42,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:54:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:42,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:54:43,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:43,034 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 07:54:43,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:43,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:43,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856452522] [2023-11-19 07:54:43,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:43,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097943422] [2023-11-19 07:54:43,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097943422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:43,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:43,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:43,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123444674] [2023-11-19 07:54:43,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:43,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:43,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:43,044 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 07:54:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:43,136 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2023-11-19 07:54:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:43,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 21 [2023-11-19 07:54:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:43,139 INFO L225 Difference]: With dead ends: 109 [2023-11-19 07:54:43,139 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:54:43,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 07:54:43,141 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 18 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:43,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 161 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:43,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:54:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2023-11-19 07:54:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 76 states have internal predecessors, (78), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:54:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-19 07:54:43,157 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 21 [2023-11-19 07:54:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:43,158 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-19 07:54:43,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 07:54:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-19 07:54:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:54:43,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:43,160 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 07:54:43,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:43,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:54:43,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:43,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1796725672, now seen corresponding path program 1 times [2023-11-19 07:54:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383094528] [2023-11-19 07:54:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:43,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147714782] [2023-11-19 07:54:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:43,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:43,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:43,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:43,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:54:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:43,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:54:43,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:43,493 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 07:54:43,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:43,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383094528] [2023-11-19 07:54:43,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147714782] [2023-11-19 07:54:43,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147714782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:43,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:43,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511203417] [2023-11-19 07:54:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:43,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:43,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:43,497 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:54:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:43,634 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2023-11-19 07:54:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:43,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-19 07:54:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:43,640 INFO L225 Difference]: With dead ends: 153 [2023-11-19 07:54:43,640 INFO L226 Difference]: Without dead ends: 147 [2023-11-19 07:54:43,641 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 07:54:43,642 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 53 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:43,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 136 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-19 07:54:43,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2023-11-19 07:54:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 101 states have internal predecessors, (121), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:54:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2023-11-19 07:54:43,682 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 28 [2023-11-19 07:54:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:43,683 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2023-11-19 07:54:43,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:54:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2023-11-19 07:54:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:54:43,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:43,684 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] [2023-11-19 07:54:43,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:43,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:43,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:43,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash -76516038, now seen corresponding path program 1 times [2023-11-19 07:54:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196263850] [2023-11-19 07:54:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:43,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:43,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608199314] [2023-11-19 07:54:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:43,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:43,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:43,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:43,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:54:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:44,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:44,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:44,150 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 07:54:44,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:44,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:44,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196263850] [2023-11-19 07:54:44,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:44,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608199314] [2023-11-19 07:54:44,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608199314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:44,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:44,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837658955] [2023-11-19 07:54:44,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:44,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:44,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:44,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:44,155 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:54:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:44,378 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2023-11-19 07:54:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:44,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-11-19 07:54:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:44,381 INFO L225 Difference]: With dead ends: 143 [2023-11-19 07:54:44,381 INFO L226 Difference]: Without dead ends: 140 [2023-11-19 07:54:44,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 07:54:44,382 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 160 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:44,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 142 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-19 07:54:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2023-11-19 07:54:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 73 states have (on average 1.643835616438356) internal successors, (120), 102 states have internal predecessors, (120), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:54:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 150 transitions. [2023-11-19 07:54:44,399 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 150 transitions. Word has length 30 [2023-11-19 07:54:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:44,399 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 150 transitions. [2023-11-19 07:54:44,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:54:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 150 transitions. [2023-11-19 07:54:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:54:44,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:44,401 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 07:54:44,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:44,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:44,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:44,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1922970177, now seen corresponding path program 1 times [2023-11-19 07:54:44,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:44,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520714675] [2023-11-19 07:54:44,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:44,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:44,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:44,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058590927] [2023-11-19 07:54:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:44,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:44,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:44,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:44,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:54:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:44,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:44,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:44,762 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 07:54:44,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:44,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520714675] [2023-11-19 07:54:44,763 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058590927] [2023-11-19 07:54:44,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058590927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:44,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:44,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:44,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236166323] [2023-11-19 07:54:44,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:44,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:44,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:44,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:44,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:44,767 INFO L87 Difference]: Start difference. First operand 120 states and 150 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:54:44,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:44,898 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2023-11-19 07:54:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:44,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-11-19 07:54:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:44,901 INFO L225 Difference]: With dead ends: 140 [2023-11-19 07:54:44,901 INFO L226 Difference]: Without dead ends: 133 [2023-11-19 07:54:44,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 07:54:44,905 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 153 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:44,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 145 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:44,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-19 07:54:44,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2023-11-19 07:54:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 99 states have internal predecessors, (114), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:54:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2023-11-19 07:54:44,934 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 31 [2023-11-19 07:54:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:44,935 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2023-11-19 07:54:44,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:54:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2023-11-19 07:54:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:54:44,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:44,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:44,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:45,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:45,161 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:45,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1457275482, now seen corresponding path program 1 times [2023-11-19 07:54:45,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:45,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112171508] [2023-11-19 07:54:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:45,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:45,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:45,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587342021] [2023-11-19 07:54:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:45,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:45,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:45,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:45,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:54:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:45,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:45,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:54:45,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:45,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112171508] [2023-11-19 07:54:45,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:45,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587342021] [2023-11-19 07:54:45,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587342021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:45,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:45,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119626746] [2023-11-19 07:54:45,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:45,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:45,313 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:54:45,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:45,765 INFO L93 Difference]: Finished difference Result 203 states and 252 transitions. [2023-11-19 07:54:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:45,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 39 [2023-11-19 07:54:45,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:45,768 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:54:45,768 INFO L226 Difference]: Without dead ends: 198 [2023-11-19 07:54:45,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 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 07:54:45,770 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 157 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:45,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 86 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:54:45,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-19 07:54:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2023-11-19 07:54:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 108 states have (on average 1.6111111111111112) internal successors, (174), 137 states have internal predecessors, (174), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:54:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 220 transitions. [2023-11-19 07:54:45,796 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 220 transitions. Word has length 39 [2023-11-19 07:54:45,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:45,796 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 220 transitions. [2023-11-19 07:54:45,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 07:54:45,797 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 220 transitions. [2023-11-19 07:54:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 07:54:45,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:45,798 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:45,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:46,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:46,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:46,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2069100392, now seen corresponding path program 1 times [2023-11-19 07:54:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:46,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469376159] [2023-11-19 07:54:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:46,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:46,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:46,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311338347] [2023-11-19 07:54:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:46,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:46,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:46,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:46,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:54:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:46,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:46,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:54:46,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:46,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:46,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469376159] [2023-11-19 07:54:46,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:46,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311338347] [2023-11-19 07:54:46,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311338347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:46,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:46,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:46,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217308427] [2023-11-19 07:54:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:46,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:46,153 INFO L87 Difference]: Start difference. First operand 163 states and 220 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 07:54:46,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:46,359 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2023-11-19 07:54:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:46,367 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), 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 40 [2023-11-19 07:54:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:46,369 INFO L225 Difference]: With dead ends: 198 [2023-11-19 07:54:46,369 INFO L226 Difference]: Without dead ends: 195 [2023-11-19 07:54:46,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 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 07:54:46,372 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 107 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:46,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 105 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-19 07:54:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 164. [2023-11-19 07:54:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 138 states have internal predecessors, (171), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:54:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2023-11-19 07:54:46,403 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 40 [2023-11-19 07:54:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:46,405 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2023-11-19 07:54:46,405 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), 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 07:54:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2023-11-19 07:54:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:54:46,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:46,413 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:46,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:46,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:54:46,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:46,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:46,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1433210023, now seen corresponding path program 1 times [2023-11-19 07:54:46,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:46,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628092986] [2023-11-19 07:54:46,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:46,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:46,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:46,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208967391] [2023-11-19 07:54:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:46,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:46,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:46,676 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:46,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:54:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:46,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:46,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:54:46,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:46,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:46,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628092986] [2023-11-19 07:54:46,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:46,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208967391] [2023-11-19 07:54:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208967391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:46,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:46,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350405015] [2023-11-19 07:54:46,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:46,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:46,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:46,852 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 07:54:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:47,453 INFO L93 Difference]: Finished difference Result 199 states and 246 transitions. [2023-11-19 07:54:47,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 60 [2023-11-19 07:54:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:47,456 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:54:47,457 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 07:54:47,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 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 07:54:47,458 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 152 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:47,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 93 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:54:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 07:54:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 166. [2023-11-19 07:54:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 111 states have (on average 1.5405405405405406) internal successors, (171), 140 states have internal predecessors, (171), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:54:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2023-11-19 07:54:47,478 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 60 [2023-11-19 07:54:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:47,479 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2023-11-19 07:54:47,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 07:54:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2023-11-19 07:54:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:54:47,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:47,480 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:47,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:47,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:54:47,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:47,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1479837660, now seen corresponding path program 1 times [2023-11-19 07:54:47,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:47,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816005785] [2023-11-19 07:54:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:47,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677084324] [2023-11-19 07:54:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:47,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:47,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:47,721 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:47,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:54:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:47,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:47,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:54:47,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:47,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816005785] [2023-11-19 07:54:47,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677084324] [2023-11-19 07:54:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677084324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:47,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:47,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:47,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409555784] [2023-11-19 07:54:47,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:47,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:47,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:47,841 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 07:54:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:48,009 INFO L93 Difference]: Finished difference Result 199 states and 242 transitions. [2023-11-19 07:54:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:48,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 61 [2023-11-19 07:54:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:48,012 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:54:48,012 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 07:54:48,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 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 07:54:48,014 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 147 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:48,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 95 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 07:54:48,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2023-11-19 07:54:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 142 states have internal predecessors, (171), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:54:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 217 transitions. [2023-11-19 07:54:48,032 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 217 transitions. Word has length 61 [2023-11-19 07:54:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:48,033 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 217 transitions. [2023-11-19 07:54:48,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 07:54:48,033 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 217 transitions. [2023-11-19 07:54:48,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:54:48,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:48,034 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:48,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 07:54:48,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:48,256 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:48,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash -489813188, now seen corresponding path program 1 times [2023-11-19 07:54:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940501912] [2023-11-19 07:54:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:48,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:48,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141047603] [2023-11-19 07:54:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:48,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:48,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:48,273 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:48,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:54:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:48,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:54:48,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:54:48,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:48,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940501912] [2023-11-19 07:54:48,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141047603] [2023-11-19 07:54:48,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141047603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:48,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:48,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84716986] [2023-11-19 07:54:48,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:48,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:48,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:48,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:48,388 INFO L87 Difference]: Start difference. First operand 168 states and 217 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:54:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:48,450 INFO L93 Difference]: Finished difference Result 175 states and 217 transitions. [2023-11-19 07:54:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:48,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-11-19 07:54:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:48,457 INFO L225 Difference]: With dead ends: 175 [2023-11-19 07:54:48,457 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 07:54:48,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 07:54:48,458 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 16 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:48,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 144 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:54:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 07:54:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2023-11-19 07:54:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 113 states have (on average 1.5044247787610618) internal successors, (170), 142 states have internal predecessors, (170), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:54:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 216 transitions. [2023-11-19 07:54:48,480 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 216 transitions. Word has length 63 [2023-11-19 07:54:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:48,482 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 216 transitions. [2023-11-19 07:54:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:54:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 216 transitions. [2023-11-19 07:54:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:54:48,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:48,484 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:48,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:48,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:48,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash -489813146, now seen corresponding path program 1 times [2023-11-19 07:54:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748623723] [2023-11-19 07:54:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:48,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:48,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614341943] [2023-11-19 07:54:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:48,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:48,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:48,740 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:48,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:54:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:48,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:54:48,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 07:54:48,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:48,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748623723] [2023-11-19 07:54:48,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614341943] [2023-11-19 07:54:48,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614341943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:48,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:48,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:48,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194392983] [2023-11-19 07:54:48,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:48,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:48,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:48,870 INFO L87 Difference]: Start difference. First operand 168 states and 216 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:54:49,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:49,014 INFO L93 Difference]: Finished difference Result 168 states and 216 transitions. [2023-11-19 07:54:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:49,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-11-19 07:54:49,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:49,019 INFO L225 Difference]: With dead ends: 168 [2023-11-19 07:54:49,019 INFO L226 Difference]: Without dead ends: 167 [2023-11-19 07:54:49,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:49,021 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 48 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:49,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 149 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-19 07:54:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-11-19 07:54:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 113 states have (on average 1.4690265486725664) internal successors, (166), 141 states have internal predecessors, (166), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:54:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 212 transitions. [2023-11-19 07:54:49,044 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 212 transitions. Word has length 63 [2023-11-19 07:54:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:49,045 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 212 transitions. [2023-11-19 07:54:49,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:54:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 212 transitions. [2023-11-19 07:54:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:54:49,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:49,048 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:49,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:49,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:49,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:49,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1995660478, now seen corresponding path program 1 times [2023-11-19 07:54:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:49,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879914718] [2023-11-19 07:54:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:49,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:49,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:49,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113973087] [2023-11-19 07:54:49,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:49,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:49,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:49,280 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:49,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:54:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:49,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:54:49,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:54:49,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:49,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879914718] [2023-11-19 07:54:49,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113973087] [2023-11-19 07:54:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113973087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:49,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:49,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953263121] [2023-11-19 07:54:49,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:49,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:49,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:49,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:49,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:49,428 INFO L87 Difference]: Start difference. First operand 167 states and 212 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:54:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:49,520 INFO L93 Difference]: Finished difference Result 167 states and 212 transitions. [2023-11-19 07:54:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2023-11-19 07:54:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:49,522 INFO L225 Difference]: With dead ends: 167 [2023-11-19 07:54:49,523 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 07:54:49,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:49,524 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 105 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:49,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 165 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 07:54:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-19 07:54:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 113 states have (on average 1.4513274336283186) internal successors, (164), 140 states have internal predecessors, (164), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:54:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 210 transitions. [2023-11-19 07:54:49,541 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 210 transitions. Word has length 64 [2023-11-19 07:54:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:49,541 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 210 transitions. [2023-11-19 07:54:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:54:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 210 transitions. [2023-11-19 07:54:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:54:49,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:49,543 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:49,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:49,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:49,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:49,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1995661760, now seen corresponding path program 1 times [2023-11-19 07:54:49,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:49,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661265955] [2023-11-19 07:54:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:49,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:49,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:49,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685618319] [2023-11-19 07:54:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:49,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:49,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:49,777 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:49,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:54:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:49,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:49,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:54:49,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661265955] [2023-11-19 07:54:49,953 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685618319] [2023-11-19 07:54:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685618319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:49,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:49,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869955910] [2023-11-19 07:54:49,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:49,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:49,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:49,955 INFO L87 Difference]: Start difference. First operand 166 states and 210 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 07:54:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:50,249 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2023-11-19 07:54:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:54:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 64 [2023-11-19 07:54:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:50,252 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:54:50,252 INFO L226 Difference]: Without dead ends: 228 [2023-11-19 07:54:50,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:54:50,253 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 282 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:50,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 221 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:50,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-19 07:54:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 195. [2023-11-19 07:54:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 137 states have (on average 1.437956204379562) internal successors, (197), 164 states have internal predecessors, (197), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:54:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2023-11-19 07:54:50,273 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 64 [2023-11-19 07:54:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:50,274 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2023-11-19 07:54:50,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 07:54:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2023-11-19 07:54:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:54:50,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:50,275 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:50,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:50,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:54:50,487 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:50,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1735932798, now seen corresponding path program 1 times [2023-11-19 07:54:50,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:50,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734344860] [2023-11-19 07:54:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:50,499 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:50,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521652661] [2023-11-19 07:54:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:50,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:50,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:50,501 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:50,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:54:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:50,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:54:50,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:54:50,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:50,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734344860] [2023-11-19 07:54:50,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:50,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521652661] [2023-11-19 07:54:50,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521652661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:50,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:50,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:50,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329348247] [2023-11-19 07:54:50,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:50,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:50,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:50,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:50,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:50,657 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 07:54:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:50,930 INFO L93 Difference]: Finished difference Result 195 states and 253 transitions. [2023-11-19 07:54:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:50,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 65 [2023-11-19 07:54:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:50,933 INFO L225 Difference]: With dead ends: 195 [2023-11-19 07:54:50,933 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 07:54:50,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 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 07:54:50,934 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 46 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:50,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 101 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 07:54:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-19 07:54:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 162 states have internal predecessors, (192), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:54:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 248 transitions. [2023-11-19 07:54:50,955 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 248 transitions. Word has length 65 [2023-11-19 07:54:50,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:50,956 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 248 transitions. [2023-11-19 07:54:50,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 07:54:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 248 transitions. [2023-11-19 07:54:50,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:54:50,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:50,957 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:50,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:51,173 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:51,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2020657984, now seen corresponding path program 1 times [2023-11-19 07:54:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:51,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751546151] [2023-11-19 07:54:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:51,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:51,185 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:51,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744078413] [2023-11-19 07:54:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:51,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:51,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:51,187 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:51,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:54:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:51,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:54:51,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:54:51,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:51,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:51,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751546151] [2023-11-19 07:54:51,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:51,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744078413] [2023-11-19 07:54:51,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744078413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:51,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:51,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426492394] [2023-11-19 07:54:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:51,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:51,352 INFO L87 Difference]: Start difference. First operand 193 states and 248 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 07:54:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:51,471 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2023-11-19 07:54:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 66 [2023-11-19 07:54:51,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:51,474 INFO L225 Difference]: With dead ends: 213 [2023-11-19 07:54:51,474 INFO L226 Difference]: Without dead ends: 212 [2023-11-19 07:54:51,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 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 07:54:51,476 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:51,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 172 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:54:51,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-19 07:54:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 197. [2023-11-19 07:54:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 141 states have (on average 1.3900709219858156) internal successors, (196), 166 states have internal predecessors, (196), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:54:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 252 transitions. [2023-11-19 07:54:51,498 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 252 transitions. Word has length 66 [2023-11-19 07:54:51,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:51,499 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 252 transitions. [2023-11-19 07:54:51,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 07:54:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 252 transitions. [2023-11-19 07:54:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 07:54:51,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:51,501 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:51,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:51,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:51,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:51,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1205477451, now seen corresponding path program 1 times [2023-11-19 07:54:51,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:51,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50177039] [2023-11-19 07:54:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:51,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:51,734 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351565585] [2023-11-19 07:54:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:51,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:51,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:51,741 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:51,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:54:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:51,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:54:51,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:54:52,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50177039] [2023-11-19 07:54:52,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351565585] [2023-11-19 07:54:52,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351565585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:52,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:52,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:54:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116586491] [2023-11-19 07:54:52,452 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:52,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:54:52,453 INFO L87 Difference]: Start difference. First operand 197 states and 252 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:54:53,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:53,192 INFO L93 Difference]: Finished difference Result 303 states and 366 transitions. [2023-11-19 07:54:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:54:53,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 75 [2023-11-19 07:54:53,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:53,196 INFO L225 Difference]: With dead ends: 303 [2023-11-19 07:54:53,196 INFO L226 Difference]: Without dead ends: 296 [2023-11-19 07:54:53,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:54:53,198 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 329 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:53,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 311 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:54:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-19 07:54:53,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 233. [2023-11-19 07:54:53,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.3815028901734103) internal successors, (239), 197 states have internal predecessors, (239), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 07:54:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 305 transitions. [2023-11-19 07:54:53,235 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 305 transitions. Word has length 75 [2023-11-19 07:54:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:53,236 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 305 transitions. [2023-11-19 07:54:53,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:54:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 305 transitions. [2023-11-19 07:54:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:54:53,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:53,238 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:53,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:53,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:53,452 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:53,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1284904628, now seen corresponding path program 1 times [2023-11-19 07:54:53,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:53,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106061355] [2023-11-19 07:54:53,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:53,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:53,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059077534] [2023-11-19 07:54:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:53,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:53,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:53,473 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:53,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:54:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:53,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:54:53,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:54:53,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106061355] [2023-11-19 07:54:54,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:54,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059077534] [2023-11-19 07:54:54,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059077534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:54,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:54,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:54:54,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341585220] [2023-11-19 07:54:54,079 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:54,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:54:54,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:54:54,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:54:54,080 INFO L87 Difference]: Start difference. First operand 233 states and 305 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:54:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:54,656 INFO L93 Difference]: Finished difference Result 329 states and 408 transitions. [2023-11-19 07:54:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:54:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 76 [2023-11-19 07:54:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:54,659 INFO L225 Difference]: With dead ends: 329 [2023-11-19 07:54:54,659 INFO L226 Difference]: Without dead ends: 326 [2023-11-19 07:54:54,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:54:54,661 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 262 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:54,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 351 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:54:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-19 07:54:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 289. [2023-11-19 07:54:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 219 states have (on average 1.3744292237442923) internal successors, (301), 243 states have internal predecessors, (301), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 07:54:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 387 transitions. [2023-11-19 07:54:54,698 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 387 transitions. Word has length 76 [2023-11-19 07:54:54,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:54,698 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 387 transitions. [2023-11-19 07:54:54,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:54:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 387 transitions. [2023-11-19 07:54:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:54:54,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:54,700 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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, 1, 1] [2023-11-19 07:54:54,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:54:54,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:54,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1177337747, now seen corresponding path program 1 times [2023-11-19 07:54:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:54,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261149453] [2023-11-19 07:54:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:54,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:54,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:54,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362955280] [2023-11-19 07:54:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:54,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:54,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:54,937 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:54,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:54:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:54,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:54:54,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:54:55,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:54:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261149453] [2023-11-19 07:54:55,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362955280] [2023-11-19 07:54:55,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362955280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:55,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:55,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:55,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374795812] [2023-11-19 07:54:55,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:55,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:55,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:55,096 INFO L87 Difference]: Start difference. First operand 289 states and 387 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:54:55,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:55,500 INFO L93 Difference]: Finished difference Result 438 states and 576 transitions. [2023-11-19 07:54:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:55,501 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), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2023-11-19 07:54:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:55,504 INFO L225 Difference]: With dead ends: 438 [2023-11-19 07:54:55,505 INFO L226 Difference]: Without dead ends: 433 [2023-11-19 07:54:55,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:55,506 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 83 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:55,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 222 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:54:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-19 07:54:55,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 394. [2023-11-19 07:54:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 304 states have (on average 1.3782894736842106) internal successors, (419), 328 states have internal predecessors, (419), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:54:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 545 transitions. [2023-11-19 07:54:55,560 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 545 transitions. Word has length 77 [2023-11-19 07:54:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:55,561 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 545 transitions. [2023-11-19 07:54:55,561 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), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:54:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 545 transitions. [2023-11-19 07:54:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:54:55,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:55,563 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:55,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:55,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:54:55,779 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:55,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1121698510, now seen corresponding path program 1 times [2023-11-19 07:54:55,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:55,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781322178] [2023-11-19 07:54:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:55,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:55,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134072366] [2023-11-19 07:54:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:55,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:55,805 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:55,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:54:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:54:55,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:56,103 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:54:56,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:56,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781322178] [2023-11-19 07:54:56,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134072366] [2023-11-19 07:54:56,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134072366] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:54:56,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:54:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:54:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707225146] [2023-11-19 07:54:56,175 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:56,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:54:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:54:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:54:56,178 INFO L87 Difference]: Start difference. First operand 394 states and 545 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:54:56,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:54:56,479 INFO L93 Difference]: Finished difference Result 405 states and 546 transitions. [2023-11-19 07:54:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2023-11-19 07:54:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:54:56,483 INFO L225 Difference]: With dead ends: 405 [2023-11-19 07:54:56,483 INFO L226 Difference]: Without dead ends: 402 [2023-11-19 07:54:56,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:54:56,484 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 96 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:54:56,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 237 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:54:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-19 07:54:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 391. [2023-11-19 07:54:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 304 states have (on average 1.355263157894737) internal successors, (412), 325 states have internal predecessors, (412), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:54:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 538 transitions. [2023-11-19 07:54:56,553 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 538 transitions. Word has length 77 [2023-11-19 07:54:56,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:54:56,554 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 538 transitions. [2023-11-19 07:54:56,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:54:56,554 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 538 transitions. [2023-11-19 07:54:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:54:56,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:54:56,558 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:56,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:54:56,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:56,771 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:54:56,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2137731730, now seen corresponding path program 1 times [2023-11-19 07:54:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:56,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055115590] [2023-11-19 07:54:56,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:56,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:56,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:54:56,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621198239] [2023-11-19 07:54:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:56,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:54:56,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:56,793 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:54:56,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:54:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:56,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:54:56,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:54:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:54:57,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:54:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:54:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055115590] [2023-11-19 07:54:57,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:54:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621198239] [2023-11-19 07:54:57,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621198239] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:54:57,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:54:57,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-19 07:54:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205856296] [2023-11-19 07:54:57,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:54:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:54:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:54:57,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:54:57,976 INFO L87 Difference]: Start difference. First operand 391 states and 538 transitions. Second operand has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-19 07:55:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:02,458 INFO L93 Difference]: Finished difference Result 424 states and 551 transitions. [2023-11-19 07:55:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:55:02,459 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 78 [2023-11-19 07:55:02,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:02,462 INFO L225 Difference]: With dead ends: 424 [2023-11-19 07:55:02,462 INFO L226 Difference]: Without dead ends: 415 [2023-11-19 07:55:02,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 07:55:02,464 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 919 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:02,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 379 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 07:55:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-19 07:55:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2023-11-19 07:55:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 300 states have (on average 1.3066666666666666) internal successors, (392), 319 states have internal predecessors, (392), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:55:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 518 transitions. [2023-11-19 07:55:02,522 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 518 transitions. Word has length 78 [2023-11-19 07:55:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:02,522 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 518 transitions. [2023-11-19 07:55:02,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-19 07:55:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 518 transitions. [2023-11-19 07:55:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:55:02,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:02,524 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:02,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:02,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:02,738 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:02,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash -412915364, now seen corresponding path program 1 times [2023-11-19 07:55:02,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:02,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311526925] [2023-11-19 07:55:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:02,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:02,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:02,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637593870] [2023-11-19 07:55:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:02,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:02,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:02,755 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:02,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:55:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:02,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:55:02,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:55:03,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:03,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:03,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311526925] [2023-11-19 07:55:03,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:03,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637593870] [2023-11-19 07:55:03,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637593870] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:03,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:55:03,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:55:03,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011807479] [2023-11-19 07:55:03,115 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:03,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:03,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:03,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:55:03,117 INFO L87 Difference]: Start difference. First operand 385 states and 518 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:55:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:03,459 INFO L93 Difference]: Finished difference Result 562 states and 758 transitions. [2023-11-19 07:55:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:55:03,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-19 07:55:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:03,464 INFO L225 Difference]: With dead ends: 562 [2023-11-19 07:55:03,464 INFO L226 Difference]: Without dead ends: 558 [2023-11-19 07:55:03,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:03,466 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 112 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:03,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 185 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:55:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-19 07:55:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 519. [2023-11-19 07:55:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 410 states have (on average 1.2951219512195122) internal successors, (531), 429 states have internal predecessors, (531), 87 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:55:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 705 transitions. [2023-11-19 07:55:03,542 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 705 transitions. Word has length 78 [2023-11-19 07:55:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:03,542 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 705 transitions. [2023-11-19 07:55:03,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:55:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 705 transitions. [2023-11-19 07:55:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:55:03,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:03,544 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2023-11-19 07:55:03,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:03,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:03,765 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:03,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -11934899, now seen corresponding path program 1 times [2023-11-19 07:55:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:03,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642552195] [2023-11-19 07:55:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:03,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:03,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:03,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436826895] [2023-11-19 07:55:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:03,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:03,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:03,777 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:03,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:55:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:03,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:03,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:55:03,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:55:04,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:04,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642552195] [2023-11-19 07:55:04,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:04,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436826895] [2023-11-19 07:55:04,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436826895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:04,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:04,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:55:04,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696707489] [2023-11-19 07:55:04,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:04,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:55:04,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:04,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:55:04,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:55:04,091 INFO L87 Difference]: Start difference. First operand 519 states and 705 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:55:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:04,685 INFO L93 Difference]: Finished difference Result 819 states and 1129 transitions. [2023-11-19 07:55:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:55:04,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 98 [2023-11-19 07:55:04,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:04,692 INFO L225 Difference]: With dead ends: 819 [2023-11-19 07:55:04,692 INFO L226 Difference]: Without dead ends: 817 [2023-11-19 07:55:04,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:04,694 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 260 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:04,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 282 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:55:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-11-19 07:55:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 728. [2023-11-19 07:55:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 578 states have (on average 1.2958477508650519) internal successors, (749), 596 states have internal predecessors, (749), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-11-19 07:55:04,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1007 transitions. [2023-11-19 07:55:04,809 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1007 transitions. Word has length 98 [2023-11-19 07:55:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:04,810 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1007 transitions. [2023-11-19 07:55:04,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:55:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1007 transitions. [2023-11-19 07:55:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 07:55:04,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:04,812 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 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 07:55:04,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:05,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 07:55:05,027 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:05,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash -369981776, now seen corresponding path program 1 times [2023-11-19 07:55:05,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:05,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903896841] [2023-11-19 07:55:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:05,039 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368141374] [2023-11-19 07:55:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:05,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:05,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:05,041 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:05,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:55:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:05,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:05,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:55:05,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:55:05,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:05,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903896841] [2023-11-19 07:55:05,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368141374] [2023-11-19 07:55:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368141374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:05,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:05,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:55:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773277256] [2023-11-19 07:55:05,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:05,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:55:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:55:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:55:05,353 INFO L87 Difference]: Start difference. First operand 728 states and 1007 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:55:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:05,958 INFO L93 Difference]: Finished difference Result 824 states and 1105 transitions. [2023-11-19 07:55:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:55:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 99 [2023-11-19 07:55:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:05,965 INFO L225 Difference]: With dead ends: 824 [2023-11-19 07:55:05,966 INFO L226 Difference]: Without dead ends: 822 [2023-11-19 07:55:05,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:05,968 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 179 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:05,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 335 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:55:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-11-19 07:55:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 733. [2023-11-19 07:55:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 584 states have (on average 1.2414383561643836) internal successors, (725), 601 states have internal predecessors, (725), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-11-19 07:55:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 983 transitions. [2023-11-19 07:55:06,126 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 983 transitions. Word has length 99 [2023-11-19 07:55:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:06,127 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 983 transitions. [2023-11-19 07:55:06,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:55:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 983 transitions. [2023-11-19 07:55:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:55:06,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:06,129 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-19 07:55:06,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:06,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 07:55:06,343 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:06,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash 929801928, now seen corresponding path program 1 times [2023-11-19 07:55:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437974998] [2023-11-19 07:55:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:06,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:06,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218564837] [2023-11-19 07:55:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:06,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:06,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:06,357 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:06,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:55:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:06,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:55:06,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:55:06,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437974998] [2023-11-19 07:55:06,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218564837] [2023-11-19 07:55:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218564837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:06,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624145877] [2023-11-19 07:55:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:06,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:06,514 INFO L87 Difference]: Start difference. First operand 733 states and 983 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-19 07:55:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:06,696 INFO L93 Difference]: Finished difference Result 736 states and 983 transitions. [2023-11-19 07:55:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2023-11-19 07:55:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:06,702 INFO L225 Difference]: With dead ends: 736 [2023-11-19 07:55:06,702 INFO L226 Difference]: Without dead ends: 735 [2023-11-19 07:55:06,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 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 07:55:06,704 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 19 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:06,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 212 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-19 07:55:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 732. [2023-11-19 07:55:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 584 states have (on average 1.2345890410958904) internal successors, (721), 600 states have internal predecessors, (721), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-11-19 07:55:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 979 transitions. [2023-11-19 07:55:06,846 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 979 transitions. Word has length 101 [2023-11-19 07:55:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:06,850 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 979 transitions. [2023-11-19 07:55:06,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-19 07:55:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 979 transitions. [2023-11-19 07:55:06,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:55:06,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:06,852 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:06,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:55:07,067 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:07,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1485266356, now seen corresponding path program 1 times [2023-11-19 07:55:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:07,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660988357] [2023-11-19 07:55:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:07,077 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:07,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629875372] [2023-11-19 07:55:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:07,079 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:07,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:55:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:07,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:07,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:55:07,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:55:07,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:07,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660988357] [2023-11-19 07:55:07,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:07,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629875372] [2023-11-19 07:55:07,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629875372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:07,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:55:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671710939] [2023-11-19 07:55:07,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:55:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:07,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:55:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:55:07,448 INFO L87 Difference]: Start difference. First operand 732 states and 979 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-19 07:55:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:08,215 INFO L93 Difference]: Finished difference Result 958 states and 1247 transitions. [2023-11-19 07:55:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:55:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 104 [2023-11-19 07:55:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:08,223 INFO L225 Difference]: With dead ends: 958 [2023-11-19 07:55:08,223 INFO L226 Difference]: Without dead ends: 957 [2023-11-19 07:55:08,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:55:08,225 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 276 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:08,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 256 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:55:08,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-11-19 07:55:08,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 808. [2023-11-19 07:55:08,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 651 states have (on average 1.2319508448540706) internal successors, (802), 667 states have internal predecessors, (802), 138 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-19 07:55:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1078 transitions. [2023-11-19 07:55:08,378 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1078 transitions. Word has length 104 [2023-11-19 07:55:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:08,378 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1078 transitions. [2023-11-19 07:55:08,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-19 07:55:08,379 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1078 transitions. [2023-11-19 07:55:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-19 07:55:08,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:08,381 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:08,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:08,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:55:08,601 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:08,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1569638871, now seen corresponding path program 1 times [2023-11-19 07:55:08,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:08,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634997978] [2023-11-19 07:55:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:08,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:08,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938234374] [2023-11-19 07:55:08,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:08,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:08,616 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:08,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:55:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:08,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:55:08,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:55:09,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:09,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634997978] [2023-11-19 07:55:09,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938234374] [2023-11-19 07:55:09,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938234374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:09,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:55:09,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:55:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709493136] [2023-11-19 07:55:09,563 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:09,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:55:09,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:09,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:55:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:55:09,565 INFO L87 Difference]: Start difference. First operand 808 states and 1078 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:55:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:10,595 INFO L93 Difference]: Finished difference Result 951 states and 1257 transitions. [2023-11-19 07:55:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:55:10,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 113 [2023-11-19 07:55:10,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:10,602 INFO L225 Difference]: With dead ends: 951 [2023-11-19 07:55:10,602 INFO L226 Difference]: Without dead ends: 948 [2023-11-19 07:55:10,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:55:10,604 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 218 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:10,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 465 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:55:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-11-19 07:55:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 915. [2023-11-19 07:55:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 737 states have (on average 1.2415196743554953) internal successors, (915), 753 states have internal predecessors, (915), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-19 07:55:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1233 transitions. [2023-11-19 07:55:10,757 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1233 transitions. Word has length 113 [2023-11-19 07:55:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:10,757 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1233 transitions. [2023-11-19 07:55:10,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:55:10,758 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1233 transitions. [2023-11-19 07:55:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 07:55:10,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:10,759 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2023-11-19 07:55:10,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:10,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:55:10,975 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:10,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1414164800, now seen corresponding path program 1 times [2023-11-19 07:55:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:10,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090705132] [2023-11-19 07:55:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:10,986 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:10,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005218324] [2023-11-19 07:55:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:10,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:10,988 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:10,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 07:55:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:11,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:55:11,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:55:11,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:11,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090705132] [2023-11-19 07:55:11,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005218324] [2023-11-19 07:55:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005218324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:11,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:55:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:55:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785087265] [2023-11-19 07:55:11,915 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:55:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:55:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:55:11,917 INFO L87 Difference]: Start difference. First operand 915 states and 1233 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:55:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:12,904 INFO L93 Difference]: Finished difference Result 952 states and 1255 transitions. [2023-11-19 07:55:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:55:12,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 114 [2023-11-19 07:55:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:12,912 INFO L225 Difference]: With dead ends: 952 [2023-11-19 07:55:12,912 INFO L226 Difference]: Without dead ends: 949 [2023-11-19 07:55:12,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:55:12,914 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 248 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:12,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 380 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:55:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-11-19 07:55:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 917. [2023-11-19 07:55:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 739 states have (on average 1.232746955345061) internal successors, (911), 755 states have internal predecessors, (911), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-19 07:55:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1229 transitions. [2023-11-19 07:55:13,065 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1229 transitions. Word has length 114 [2023-11-19 07:55:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:13,066 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1229 transitions. [2023-11-19 07:55:13,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:55:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1229 transitions. [2023-11-19 07:55:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-19 07:55:13,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:13,068 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1] [2023-11-19 07:55:13,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-19 07:55:13,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:55:13,283 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:13,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:13,284 INFO L85 PathProgramCache]: Analyzing trace with hash 889435897, now seen corresponding path program 1 times [2023-11-19 07:55:13,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:13,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192905760] [2023-11-19 07:55:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:13,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:13,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797019388] [2023-11-19 07:55:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:13,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:13,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:13,297 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:13,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-19 07:55:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:13,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:55:13,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-19 07:55:13,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192905760] [2023-11-19 07:55:13,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797019388] [2023-11-19 07:55:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797019388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:13,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782464691] [2023-11-19 07:55:13,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:13,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:55:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:55:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:13,508 INFO L87 Difference]: Start difference. First operand 917 states and 1229 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:55:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:13,967 INFO L93 Difference]: Finished difference Result 950 states and 1253 transitions. [2023-11-19 07:55:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:55:13,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2023-11-19 07:55:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:13,974 INFO L225 Difference]: With dead ends: 950 [2023-11-19 07:55:13,975 INFO L226 Difference]: Without dead ends: 942 [2023-11-19 07:55:13,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:55:13,976 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 91 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:13,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 340 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:55:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-11-19 07:55:14,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 702. [2023-11-19 07:55:14,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 569 states have (on average 1.181019332161687) internal successors, (672), 580 states have internal predecessors, (672), 119 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-11-19 07:55:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 910 transitions. [2023-11-19 07:55:14,114 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 910 transitions. Word has length 115 [2023-11-19 07:55:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:14,115 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 910 transitions. [2023-11-19 07:55:14,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:55:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 910 transitions. [2023-11-19 07:55:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 07:55:14,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:14,118 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1] [2023-11-19 07:55:14,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:14,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:55:14,337 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:14,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1802709090, now seen corresponding path program 1 times [2023-11-19 07:55:14,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797613174] [2023-11-19 07:55:14,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:14,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:14,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:14,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620657030] [2023-11-19 07:55:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:14,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:14,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:14,364 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:14,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-19 07:55:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:14,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:55:14,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:55:15,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:55:16,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797613174] [2023-11-19 07:55:16,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:16,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620657030] [2023-11-19 07:55:16,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620657030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:16,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:16,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-19 07:55:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380586930] [2023-11-19 07:55:16,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:16,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 07:55:16,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 07:55:16,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:55:16,084 INFO L87 Difference]: Start difference. First operand 702 states and 910 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-19 07:55:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:24,399 INFO L93 Difference]: Finished difference Result 736 states and 933 transitions. [2023-11-19 07:55:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-19 07:55:24,399 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) Word has length 116 [2023-11-19 07:55:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:24,404 INFO L225 Difference]: With dead ends: 736 [2023-11-19 07:55:24,404 INFO L226 Difference]: Without dead ends: 735 [2023-11-19 07:55:24,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=870, Invalid=3036, Unknown=0, NotChecked=0, Total=3906 [2023-11-19 07:55:24,407 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 615 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:24,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 430 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-19 07:55:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-19 07:55:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 680. [2023-11-19 07:55:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 547 states have (on average 1.1809872029250457) internal successors, (646), 558 states have internal predecessors, (646), 119 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-11-19 07:55:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 884 transitions. [2023-11-19 07:55:24,556 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 884 transitions. Word has length 116 [2023-11-19 07:55:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:24,557 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 884 transitions. [2023-11-19 07:55:24,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-19 07:55:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 884 transitions. [2023-11-19 07:55:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 07:55:24,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:24,559 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-11-19 07:55:24,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:24,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:55:24,779 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:24,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:24,780 INFO L85 PathProgramCache]: Analyzing trace with hash -767441840, now seen corresponding path program 2 times [2023-11-19 07:55:24,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:24,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144456597] [2023-11-19 07:55:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:24,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:24,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:24,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40515970] [2023-11-19 07:55:24,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:55:24,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:24,791 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:24,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-19 07:55:24,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:55:24,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:55:24,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:55:24,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:55:25,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:25,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144456597] [2023-11-19 07:55:25,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40515970] [2023-11-19 07:55:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40515970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:25,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:55:25,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:55:25,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567891042] [2023-11-19 07:55:25,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:25,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:55:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:55:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:55:25,424 INFO L87 Difference]: Start difference. First operand 680 states and 884 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-19 07:55:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:26,420 INFO L93 Difference]: Finished difference Result 1160 states and 1485 transitions. [2023-11-19 07:55:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:55:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 116 [2023-11-19 07:55:26,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:26,427 INFO L225 Difference]: With dead ends: 1160 [2023-11-19 07:55:26,427 INFO L226 Difference]: Without dead ends: 1156 [2023-11-19 07:55:26,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:55:26,429 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 411 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:26,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 472 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:55:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-11-19 07:55:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 854. [2023-11-19 07:55:26,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 693 states have (on average 1.1587301587301588) internal successors, (803), 704 states have internal predecessors, (803), 147 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2023-11-19 07:55:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1097 transitions. [2023-11-19 07:55:26,603 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1097 transitions. Word has length 116 [2023-11-19 07:55:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:26,604 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1097 transitions. [2023-11-19 07:55:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-19 07:55:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1097 transitions. [2023-11-19 07:55:26,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:55:26,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:26,606 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-19 07:55:26,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:26,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:26,819 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:26,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -638119105, now seen corresponding path program 2 times [2023-11-19 07:55:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:26,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293898724] [2023-11-19 07:55:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:26,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:26,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244033941] [2023-11-19 07:55:26,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:55:26,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:26,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:26,838 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:26,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-19 07:55:26,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:55:26,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:55:26,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:55:26,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-19 07:55:26,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:26,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293898724] [2023-11-19 07:55:26,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244033941] [2023-11-19 07:55:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244033941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:26,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:55:26,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024487819] [2023-11-19 07:55:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:26,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:26,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:26,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:26,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:26,990 INFO L87 Difference]: Start difference. First operand 854 states and 1097 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-19 07:55:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:27,279 INFO L93 Difference]: Finished difference Result 1126 states and 1437 transitions. [2023-11-19 07:55:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:55:27,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2023-11-19 07:55:27,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:27,283 INFO L225 Difference]: With dead ends: 1126 [2023-11-19 07:55:27,284 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 07:55:27,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:27,288 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 30 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:27,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 133 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 07:55:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 543. [2023-11-19 07:55:27,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 437 states have (on average 1.1533180778032037) internal successors, (504), 448 states have internal predecessors, (504), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-19 07:55:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 688 transitions. [2023-11-19 07:55:27,408 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 688 transitions. Word has length 123 [2023-11-19 07:55:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:27,408 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 688 transitions. [2023-11-19 07:55:27,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-19 07:55:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 688 transitions. [2023-11-19 07:55:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:55:27,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:27,411 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 07:55:27,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:27,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:27,632 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:27,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash 470018659, now seen corresponding path program 2 times [2023-11-19 07:55:27,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:27,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881472646] [2023-11-19 07:55:27,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:27,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:27,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944154673] [2023-11-19 07:55:27,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:55:27,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:27,657 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:27,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-19 07:55:27,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:55:27,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:55:27,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:55:27,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-19 07:55:28,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:28,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881472646] [2023-11-19 07:55:28,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:28,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944154673] [2023-11-19 07:55:28,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944154673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:55:28,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:55:28,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:55:28,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324559366] [2023-11-19 07:55:28,913 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:28,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:55:28,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:28,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:55:28,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:55:28,915 INFO L87 Difference]: Start difference. First operand 543 states and 688 transitions. Second operand has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 07:55:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:29,994 INFO L93 Difference]: Finished difference Result 633 states and 790 transitions. [2023-11-19 07:55:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:55:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 151 [2023-11-19 07:55:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:29,999 INFO L225 Difference]: With dead ends: 633 [2023-11-19 07:55:29,999 INFO L226 Difference]: Without dead ends: 632 [2023-11-19 07:55:30,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:55:30,000 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 216 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:30,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 558 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:55:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-11-19 07:55:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 543. [2023-11-19 07:55:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 437 states have (on average 1.1510297482837528) internal successors, (503), 448 states have internal predecessors, (503), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-19 07:55:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 687 transitions. [2023-11-19 07:55:30,128 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 687 transitions. Word has length 151 [2023-11-19 07:55:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:30,129 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 687 transitions. [2023-11-19 07:55:30,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 07:55:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 687 transitions. [2023-11-19 07:55:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-19 07:55:30,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:30,131 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-19 07:55:30,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-19 07:55:30,352 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:55:30,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1685676596, now seen corresponding path program 2 times [2023-11-19 07:55:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099975562] [2023-11-19 07:55:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:30,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875605095] [2023-11-19 07:55:30,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:55:30,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:30,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:30,371 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:30,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_774ed87c-6fab-4532-8574-b47f8940a3bd/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-19 07:55:30,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:55:30,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:55:30,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:55:30,457 INFO L285 TraceCheckSpWp]: Computing forward predicates...