./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/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_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/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_c4a2d873-d1b9-4b34-8782-627accff1f9a/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 cf96ccf42beeb32dd4ada276d6687a251a0093c06fe1150e921bbfebb3df0607 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:03,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:03,357 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:57:03,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:03,363 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:03,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:03,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:03,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:03,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:03,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:03,393 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:03,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:03,394 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:03,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:03,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:03,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:03,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:03,397 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:03,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:03,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:03,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:03,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:03,404 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:57:03,405 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:03,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:03,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:03,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:03,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:03,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:03,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:03,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:03,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:03,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:03,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:03,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:03,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:03,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:03,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:03,412 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:03,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:03,412 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:03,413 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_c4a2d873-d1b9-4b34-8782-627accff1f9a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf96ccf42beeb32dd4ada276d6687a251a0093c06fe1150e921bbfebb3df0607 [2023-11-19 07:57:03,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:03,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:03,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:03,742 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:03,742 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:03,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2023-11-19 07:57:06,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:07,163 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:07,164 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound2.c [2023-11-19 07:57:07,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/data/61de27904/e680e9f9d4f042ceaeca6da28bbf12a7/FLAG1f9b745c0 [2023-11-19 07:57:07,188 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/data/61de27904/e680e9f9d4f042ceaeca6da28bbf12a7 [2023-11-19 07:57:07,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:07,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:07,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:07,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:07,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:07,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6648f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07, skipping insertion in model container [2023-11-19 07:57:07,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,235 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:07,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:07,443 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:07,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:07,481 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:07,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07 WrapperNode [2023-11-19 07:57:07,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:07,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:07,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:07,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:07,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,557 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 160 [2023-11-19 07:57:07,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:07,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:07,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:07,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:07,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:07,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:07,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:07,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:07,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:07,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:07,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:07,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:07,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:57:07,706 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:57:07,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:07,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:07,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:07,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:57:07,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:57:07,783 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:07,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:08,444 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:08,455 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:08,456 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:57:08,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:08 BoogieIcfgContainer [2023-11-19 07:57:08,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:08,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:08,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:08,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:08,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:07" (1/3) ... [2023-11-19 07:57:08,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9d8c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:08, skipping insertion in model container [2023-11-19 07:57:08,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (2/3) ... [2023-11-19 07:57:08,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9d8c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:08, skipping insertion in model container [2023-11-19 07:57:08,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:08" (3/3) ... [2023-11-19 07:57:08,471 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound2.c [2023-11-19 07:57:08,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:08,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-19 07:57:08,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:08,552 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;@413e8a5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:08,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-11-19 07:57:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 89 states have (on average 1.853932584269663) internal successors, (165), 158 states have internal predecessors, (165), 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 07:57:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:57:08,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:08,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:08,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:08,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash -863715224, now seen corresponding path program 1 times [2023-11-19 07:57:08,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:08,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280212447] [2023-11-19 07:57:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:08,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280212447] [2023-11-19 07:57:08,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:57:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844474986] [2023-11-19 07:57:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:08,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:08,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:57:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:08,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:57:08,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:08,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844474986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:08,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:08,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:08,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503166906] [2023-11-19 07:57:08,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:57:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:09,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:57:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:57:09,045 INFO L87 Difference]: Start difference. First operand has 170 states, 89 states have (on average 1.853932584269663) internal successors, (165), 158 states have internal predecessors, (165), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:57:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:09,135 INFO L93 Difference]: Finished difference Result 335 states and 375 transitions. [2023-11-19 07:57:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:57:09,140 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-19 07:57:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:09,153 INFO L225 Difference]: With dead ends: 335 [2023-11-19 07:57:09,153 INFO L226 Difference]: Without dead ends: 162 [2023-11-19 07:57:09,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 07:57:09,165 INFO L413 NwaCegarLoop]: 179 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, 179 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 07:57:09,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-19 07:57:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-19 07:57:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 84 states have (on average 1.8333333333333333) internal successors, (154), 151 states have internal predecessors, (154), 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 07:57:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2023-11-19 07:57:09,218 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 14 [2023-11-19 07:57:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:09,219 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2023-11-19 07:57:09,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:57:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2023-11-19 07:57:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:57:09,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:09,221 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:09,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:57:09,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:09,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1254895192, now seen corresponding path program 1 times [2023-11-19 07:57:09,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:09,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907758156] [2023-11-19 07:57:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:09,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:09,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033435998] [2023-11-19 07:57:09,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:09,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,458 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:09,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:57:09,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:57:09,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:09,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907758156] [2023-11-19 07:57:09,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:09,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033435998] [2023-11-19 07:57:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033435998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:09,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:09,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:57:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445386411] [2023-11-19 07:57:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:57:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:57:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:09,698 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:57:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:10,029 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2023-11-19 07:57:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-19 07:57:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:10,031 INFO L225 Difference]: With dead ends: 162 [2023-11-19 07:57:10,032 INFO L226 Difference]: Without dead ends: 160 [2023-11-19 07:57:10,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:10,034 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 431 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:10,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 255 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-19 07:57:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-19 07:57:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 84 states have (on average 1.8095238095238095) internal successors, (152), 149 states have internal predecessors, (152), 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 07:57:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2023-11-19 07:57:10,052 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 14 [2023-11-19 07:57:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:10,053 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2023-11-19 07:57:10,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 4 states have (on average 1.75) internal successors, (7), 6 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:57:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2023-11-19 07:57:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 07:57:10,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:10,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:10,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:10,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:57:10,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:10,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash -247045249, now seen corresponding path program 1 times [2023-11-19 07:57:10,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:10,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430595394] [2023-11-19 07:57:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:10,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:10,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838886975] [2023-11-19 07:57:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:10,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:10,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:10,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:57:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:10,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:57:10,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:57:10,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430595394] [2023-11-19 07:57:10,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838886975] [2023-11-19 07:57:10,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838886975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:10,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:10,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:10,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732694526] [2023-11-19 07:57:10,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:10,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:57:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:57:10,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:57:10,464 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:57:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:10,945 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2023-11-19 07:57:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:10,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-19 07:57:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:10,948 INFO L225 Difference]: With dead ends: 160 [2023-11-19 07:57:10,948 INFO L226 Difference]: Without dead ends: 159 [2023-11-19 07:57:10,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:10,950 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 284 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:10,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 255 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:57:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-19 07:57:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-19 07:57:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 84 states have (on average 1.7976190476190477) internal successors, (151), 148 states have internal predecessors, (151), 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 07:57:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2023-11-19 07:57:10,971 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 15 [2023-11-19 07:57:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:10,972 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2023-11-19 07:57:10,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.75) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:57:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2023-11-19 07:57:10,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:57:10,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:10,973 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:11,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:11,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:11,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:11,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:11,200 INFO L85 PathProgramCache]: Analyzing trace with hash -403184857, now seen corresponding path program 1 times [2023-11-19 07:57:11,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:11,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892777679] [2023-11-19 07:57:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:11,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:11,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141143475] [2023-11-19 07:57:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:11,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:11,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:11,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:57:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:11,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:11,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:11,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892777679] [2023-11-19 07:57:11,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141143475] [2023-11-19 07:57:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141143475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:11,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:11,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404623970] [2023-11-19 07:57:11,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:11,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:11,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:11,398 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:11,440 INFO L93 Difference]: Finished difference Result 200 states and 211 transitions. [2023-11-19 07:57:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-11-19 07:57:11,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:11,442 INFO L225 Difference]: With dead ends: 200 [2023-11-19 07:57:11,443 INFO L226 Difference]: Without dead ends: 199 [2023-11-19 07:57:11,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 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 07:57:11,448 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 42 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:11,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 469 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-19 07:57:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 175. [2023-11-19 07:57:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 98 states have (on average 1.7755102040816326) internal successors, (174), 162 states have internal predecessors, (174), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:57:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 194 transitions. [2023-11-19 07:57:11,473 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 194 transitions. Word has length 29 [2023-11-19 07:57:11,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:11,473 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 194 transitions. [2023-11-19 07:57:11,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 194 transitions. [2023-11-19 07:57:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:57:11,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:11,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:11,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:11,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:11,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:11,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 386171375, now seen corresponding path program 1 times [2023-11-19 07:57:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:11,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829338536] [2023-11-19 07:57:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:11,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:11,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674570897] [2023-11-19 07:57:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:11,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:11,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:11,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:57:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:11,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:11,829 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:11,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:11,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829338536] [2023-11-19 07:57:11,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:11,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674570897] [2023-11-19 07:57:11,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674570897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:11,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:11,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632475340] [2023-11-19 07:57:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:11,833 INFO L87 Difference]: Start difference. First operand 175 states and 194 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:11,868 INFO L93 Difference]: Finished difference Result 205 states and 222 transitions. [2023-11-19 07:57:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:11,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-11-19 07:57:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:11,872 INFO L225 Difference]: With dead ends: 205 [2023-11-19 07:57:11,872 INFO L226 Difference]: Without dead ends: 175 [2023-11-19 07:57:11,873 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 07:57:11,873 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 3 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:11,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 472 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:11,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-19 07:57:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-19 07:57:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 98 states have (on average 1.7551020408163265) internal successors, (172), 162 states have internal predecessors, (172), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:57:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 192 transitions. [2023-11-19 07:57:11,889 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 192 transitions. Word has length 30 [2023-11-19 07:57:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:11,890 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 192 transitions. [2023-11-19 07:57:11,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 192 transitions. [2023-11-19 07:57:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 07:57:11,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:11,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:11,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:12,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:12,093 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:12,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:12,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1785894546, now seen corresponding path program 1 times [2023-11-19 07:57:12,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631608490] [2023-11-19 07:57:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:12,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:12,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [9435309] [2023-11-19 07:57:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:12,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:12,118 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:12,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:57:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:12,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:12,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:12,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:12,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:12,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631608490] [2023-11-19 07:57:12,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:12,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9435309] [2023-11-19 07:57:12,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9435309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:12,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:12,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878717344] [2023-11-19 07:57:12,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:12,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:12,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:12,203 INFO L87 Difference]: Start difference. First operand 175 states and 192 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 07:57:12,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:12,347 INFO L93 Difference]: Finished difference Result 293 states and 309 transitions. [2023-11-19 07:57:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:12,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 33 [2023-11-19 07:57:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:12,350 INFO L225 Difference]: With dead ends: 293 [2023-11-19 07:57:12,350 INFO L226 Difference]: Without dead ends: 283 [2023-11-19 07:57:12,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 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 07:57:12,352 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 111 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:12,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 234 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:12,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-19 07:57:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 227. [2023-11-19 07:57:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 146 states have (on average 1.7534246575342465) internal successors, (256), 210 states have internal predecessors, (256), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:57:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 284 transitions. [2023-11-19 07:57:12,367 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 284 transitions. Word has length 33 [2023-11-19 07:57:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:12,368 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 284 transitions. [2023-11-19 07:57:12,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 07:57:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 284 transitions. [2023-11-19 07:57:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:57:12,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:12,370 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:12,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:12,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:12,586 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:12,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:12,586 INFO L85 PathProgramCache]: Analyzing trace with hash 471842102, now seen corresponding path program 1 times [2023-11-19 07:57:12,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:12,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473525865] [2023-11-19 07:57:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:12,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:12,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391322247] [2023-11-19 07:57:12,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:12,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:12,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:12,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:57:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:12,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:12,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:12,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:12,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:12,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473525865] [2023-11-19 07:57:12,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:12,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391322247] [2023-11-19 07:57:12,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391322247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:12,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:12,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:12,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473639560] [2023-11-19 07:57:12,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:12,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:57:12,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:57:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:57:12,738 INFO L87 Difference]: Start difference. First operand 227 states and 284 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:12,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:12,814 INFO L93 Difference]: Finished difference Result 227 states and 284 transitions. [2023-11-19 07:57:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2023-11-19 07:57:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:12,820 INFO L225 Difference]: With dead ends: 227 [2023-11-19 07:57:12,820 INFO L226 Difference]: Without dead ends: 225 [2023-11-19 07:57:12,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:12,821 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 152 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:12,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 472 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-19 07:57:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-11-19 07:57:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 146 states have (on average 1.7328767123287672) internal successors, (253), 208 states have internal predecessors, (253), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:57:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 281 transitions. [2023-11-19 07:57:12,844 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 281 transitions. Word has length 34 [2023-11-19 07:57:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:12,845 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 281 transitions. [2023-11-19 07:57:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 281 transitions. [2023-11-19 07:57:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:57:12,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:12,847 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:12,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 07:57:13,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:13,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:13,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1742265904, now seen corresponding path program 1 times [2023-11-19 07:57:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549123682] [2023-11-19 07:57:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567307860] [2023-11-19 07:57:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:13,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:13,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:13,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:57:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:13,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:13,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:13,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549123682] [2023-11-19 07:57:13,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:13,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567307860] [2023-11-19 07:57:13,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567307860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:13,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:13,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:13,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551955526] [2023-11-19 07:57:13,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:13,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:13,251 INFO L87 Difference]: Start difference. First operand 225 states and 281 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 07:57:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:13,855 INFO L93 Difference]: Finished difference Result 288 states and 304 transitions. [2023-11-19 07:57:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:13,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 35 [2023-11-19 07:57:13,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:13,858 INFO L225 Difference]: With dead ends: 288 [2023-11-19 07:57:13,858 INFO L226 Difference]: Without dead ends: 285 [2023-11-19 07:57:13,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 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 07:57:13,859 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 363 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:13,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 170 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:57:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-19 07:57:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 225. [2023-11-19 07:57:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 146 states have (on average 1.7123287671232876) internal successors, (250), 208 states have internal predecessors, (250), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:57:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 278 transitions. [2023-11-19 07:57:13,875 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 278 transitions. Word has length 35 [2023-11-19 07:57:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:13,876 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 278 transitions. [2023-11-19 07:57:13,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 07:57:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 278 transitions. [2023-11-19 07:57:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:57:13,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:13,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-19 07:57:14,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:14,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:14,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1742203347, now seen corresponding path program 1 times [2023-11-19 07:57:14,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966834116] [2023-11-19 07:57:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:14,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773552320] [2023-11-19 07:57:14,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:14,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:14,113 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:14,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:57:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:14,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:14,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:14,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966834116] [2023-11-19 07:57:14,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:14,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773552320] [2023-11-19 07:57:14,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773552320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:14,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947258775] [2023-11-19 07:57:14,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:57:14,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:57:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:57:14,256 INFO L87 Difference]: Start difference. First operand 225 states and 278 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:14,327 INFO L93 Difference]: Finished difference Result 389 states and 447 transitions. [2023-11-19 07:57:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2023-11-19 07:57:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:14,329 INFO L225 Difference]: With dead ends: 389 [2023-11-19 07:57:14,330 INFO L226 Difference]: Without dead ends: 244 [2023-11-19 07:57:14,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:14,331 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 34 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:14,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 640 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-19 07:57:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2023-11-19 07:57:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.6933333333333334) internal successors, (254), 212 states have internal predecessors, (254), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:57:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 282 transitions. [2023-11-19 07:57:14,349 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 282 transitions. Word has length 35 [2023-11-19 07:57:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:14,349 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 282 transitions. [2023-11-19 07:57:14,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 282 transitions. [2023-11-19 07:57:14,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:57:14,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:14,351 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:14,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:14,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:57:14,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:14,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1824331626, now seen corresponding path program 1 times [2023-11-19 07:57:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:14,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586488692] [2023-11-19 07:57:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:14,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:14,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322233688] [2023-11-19 07:57:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:14,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:14,584 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:14,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:57:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:14,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:14,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:14,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586488692] [2023-11-19 07:57:14,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:14,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322233688] [2023-11-19 07:57:14,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322233688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:14,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473235182] [2023-11-19 07:57:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:14,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:14,743 INFO L87 Difference]: Start difference. First operand 229 states and 282 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 07:57:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:15,069 INFO L93 Difference]: Finished difference Result 277 states and 293 transitions. [2023-11-19 07:57:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 36 [2023-11-19 07:57:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:15,072 INFO L225 Difference]: With dead ends: 277 [2023-11-19 07:57:15,072 INFO L226 Difference]: Without dead ends: 276 [2023-11-19 07:57:15,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 07:57:15,073 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 117 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:15,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 224 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:57:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-19 07:57:15,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 229. [2023-11-19 07:57:15,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.6866666666666668) internal successors, (253), 212 states have internal predecessors, (253), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:57:15,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 281 transitions. [2023-11-19 07:57:15,089 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 281 transitions. Word has length 36 [2023-11-19 07:57:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:15,089 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 281 transitions. [2023-11-19 07:57:15,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 07:57:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 281 transitions. [2023-11-19 07:57:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:57:15,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:15,090 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:15,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:15,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:57:15,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:15,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash -719705358, now seen corresponding path program 1 times [2023-11-19 07:57:15,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:15,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531507312] [2023-11-19 07:57:15,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:15,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:15,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424691493] [2023-11-19 07:57:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:15,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:15,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:15,329 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:15,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:57:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:15,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:15,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:15,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:15,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:15,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531507312] [2023-11-19 07:57:15,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:15,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424691493] [2023-11-19 07:57:15,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424691493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:15,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:15,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:15,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261829584] [2023-11-19 07:57:15,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:15,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:15,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:15,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:15,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:15,445 INFO L87 Difference]: Start difference. First operand 229 states and 281 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, (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 07:57:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:15,966 INFO L93 Difference]: Finished difference Result 305 states and 323 transitions. [2023-11-19 07:57:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:15,966 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, (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 37 [2023-11-19 07:57:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:15,969 INFO L225 Difference]: With dead ends: 305 [2023-11-19 07:57:15,969 INFO L226 Difference]: Without dead ends: 303 [2023-11-19 07:57:15,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 07:57:15,970 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 125 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:15,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 296 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:57:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-19 07:57:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 229. [2023-11-19 07:57:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 150 states have (on average 1.6733333333333333) internal successors, (251), 212 states have internal predecessors, (251), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:57:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 279 transitions. [2023-11-19 07:57:15,989 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 279 transitions. Word has length 37 [2023-11-19 07:57:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:15,989 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 279 transitions. [2023-11-19 07:57:15,990 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, (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 07:57:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 279 transitions. [2023-11-19 07:57:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:57:15,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:15,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:16,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:16,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:16,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:16,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash -779826475, now seen corresponding path program 1 times [2023-11-19 07:57:16,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:16,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882387415] [2023-11-19 07:57:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:16,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:16,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747591274] [2023-11-19 07:57:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:16,221 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:16,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:57:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:16,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:16,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:16,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:16,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882387415] [2023-11-19 07:57:16,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:16,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747591274] [2023-11-19 07:57:16,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747591274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:16,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:16,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026442589] [2023-11-19 07:57:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:16,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:16,287 INFO L87 Difference]: Start difference. First operand 229 states and 279 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:16,367 INFO L93 Difference]: Finished difference Result 415 states and 509 transitions. [2023-11-19 07:57:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:16,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2023-11-19 07:57:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:16,370 INFO L225 Difference]: With dead ends: 415 [2023-11-19 07:57:16,370 INFO L226 Difference]: Without dead ends: 407 [2023-11-19 07:57:16,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 07:57:16,372 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 126 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:16,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 279 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-19 07:57:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 330. [2023-11-19 07:57:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 243 states have (on average 1.699588477366255) internal successors, (413), 305 states have internal predecessors, (413), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:16,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 457 transitions. [2023-11-19 07:57:16,395 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 457 transitions. Word has length 37 [2023-11-19 07:57:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:16,395 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 457 transitions. [2023-11-19 07:57:16,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:57:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 457 transitions. [2023-11-19 07:57:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 07:57:16,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:16,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:16,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:16,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:16,618 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:16,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:16,619 INFO L85 PathProgramCache]: Analyzing trace with hash -836029416, now seen corresponding path program 1 times [2023-11-19 07:57:16,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:16,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662303566] [2023-11-19 07:57:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:16,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:16,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420080641] [2023-11-19 07:57:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:16,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:16,631 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:16,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:57:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:16,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:16,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:16,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:16,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662303566] [2023-11-19 07:57:16,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:16,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420080641] [2023-11-19 07:57:16,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420080641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:16,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:16,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:16,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294739518] [2023-11-19 07:57:16,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:16,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:16,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:16,741 INFO L87 Difference]: Start difference. First operand 330 states and 457 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, (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 07:57:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:16,956 INFO L93 Difference]: Finished difference Result 393 states and 479 transitions. [2023-11-19 07:57:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:16,957 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, (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 38 [2023-11-19 07:57:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:16,960 INFO L225 Difference]: With dead ends: 393 [2023-11-19 07:57:16,960 INFO L226 Difference]: Without dead ends: 389 [2023-11-19 07:57:16,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 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 07:57:16,962 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 189 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:16,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 257 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-19 07:57:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 330. [2023-11-19 07:57:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 243 states have (on average 1.6748971193415638) internal successors, (407), 305 states have internal predecessors, (407), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:16,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 451 transitions. [2023-11-19 07:57:16,986 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 451 transitions. Word has length 38 [2023-11-19 07:57:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:16,987 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 451 transitions. [2023-11-19 07:57:16,987 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, (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 07:57:16,987 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 451 transitions. [2023-11-19 07:57:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:57:16,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:16,988 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:17,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:17,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:57:17,210 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:17,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2088930345, now seen corresponding path program 1 times [2023-11-19 07:57:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20214387] [2023-11-19 07:57:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:17,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:17,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261235873] [2023-11-19 07:57:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:17,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:17,224 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:17,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:57:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:17,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:17,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:17,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:17,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20214387] [2023-11-19 07:57:17,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:17,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261235873] [2023-11-19 07:57:17,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261235873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:17,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:17,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:17,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437893138] [2023-11-19 07:57:17,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:17,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:17,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:17,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:17,353 INFO L87 Difference]: Start difference. First operand 330 states and 451 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 07:57:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:18,614 INFO L93 Difference]: Finished difference Result 440 states and 508 transitions. [2023-11-19 07:57:18,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 39 [2023-11-19 07:57:18,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:18,618 INFO L225 Difference]: With dead ends: 440 [2023-11-19 07:57:18,619 INFO L226 Difference]: Without dead ends: 439 [2023-11-19 07:57:18,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:18,620 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 601 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:18,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 292 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:57:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-11-19 07:57:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 330. [2023-11-19 07:57:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 243 states have (on average 1.6707818930041152) internal successors, (406), 305 states have internal predecessors, (406), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 450 transitions. [2023-11-19 07:57:18,643 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 450 transitions. Word has length 39 [2023-11-19 07:57:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:18,644 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 450 transitions. [2023-11-19 07:57:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 07:57:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 450 transitions. [2023-11-19 07:57:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 07:57:18,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:18,645 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:18,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:18,859 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:18,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash -332331169, now seen corresponding path program 1 times [2023-11-19 07:57:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:18,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746140267] [2023-11-19 07:57:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:18,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987166717] [2023-11-19 07:57:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:18,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:18,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:18,870 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:18,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:57:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:18,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:18,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:18,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:18,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:18,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746140267] [2023-11-19 07:57:18,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:18,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987166717] [2023-11-19 07:57:18,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987166717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:18,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:18,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460005315] [2023-11-19 07:57:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:19,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:19,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:19,001 INFO L87 Difference]: Start difference. First operand 330 states and 450 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 07:57:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:19,976 INFO L93 Difference]: Finished difference Result 439 states and 507 transitions. [2023-11-19 07:57:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:19,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 40 [2023-11-19 07:57:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:19,979 INFO L225 Difference]: With dead ends: 439 [2023-11-19 07:57:19,979 INFO L226 Difference]: Without dead ends: 438 [2023-11-19 07:57:19,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:19,980 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 631 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:19,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 276 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:57:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-11-19 07:57:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 330. [2023-11-19 07:57:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 243 states have (on average 1.6666666666666667) internal successors, (405), 305 states have internal predecessors, (405), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 449 transitions. [2023-11-19 07:57:20,003 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 449 transitions. Word has length 40 [2023-11-19 07:57:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:20,003 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 449 transitions. [2023-11-19 07:57:20,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 07:57:20,004 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 449 transitions. [2023-11-19 07:57:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 07:57:20,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:20,005 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:20,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:20,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:20,219 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:20,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:20,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1088285335, now seen corresponding path program 1 times [2023-11-19 07:57:20,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:20,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723174829] [2023-11-19 07:57:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:20,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:20,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042321152] [2023-11-19 07:57:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:20,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:20,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:20,240 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:20,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:57:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:20,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:20,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:20,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:20,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723174829] [2023-11-19 07:57:20,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042321152] [2023-11-19 07:57:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042321152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228573474] [2023-11-19 07:57:20,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:20,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:20,383 INFO L87 Difference]: Start difference. First operand 330 states and 449 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 07:57:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:20,895 INFO L93 Difference]: Finished difference Result 373 states and 461 transitions. [2023-11-19 07:57:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 44 [2023-11-19 07:57:20,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:20,898 INFO L225 Difference]: With dead ends: 373 [2023-11-19 07:57:20,898 INFO L226 Difference]: Without dead ends: 371 [2023-11-19 07:57:20,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 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 07:57:20,899 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 224 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:20,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 228 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:57:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-19 07:57:20,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 331. [2023-11-19 07:57:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 244 states have (on average 1.6557377049180328) internal successors, (404), 305 states have internal predecessors, (404), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:20,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2023-11-19 07:57:20,924 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 44 [2023-11-19 07:57:20,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:20,924 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2023-11-19 07:57:20,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 07:57:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2023-11-19 07:57:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:57:20,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:20,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:20,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:21,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:21,143 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:21,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash 622893190, now seen corresponding path program 1 times [2023-11-19 07:57:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476541041] [2023-11-19 07:57:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:21,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:21,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636238249] [2023-11-19 07:57:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:21,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:21,165 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:21,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:57:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:21,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:21,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:21,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:21,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:21,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476541041] [2023-11-19 07:57:21,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:21,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636238249] [2023-11-19 07:57:21,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636238249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:21,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:21,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:21,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869737998] [2023-11-19 07:57:21,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:21,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:21,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:21,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:21,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:21,317 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 07:57:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:21,778 INFO L93 Difference]: Finished difference Result 371 states and 458 transitions. [2023-11-19 07:57:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:21,778 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), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2023-11-19 07:57:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:21,781 INFO L225 Difference]: With dead ends: 371 [2023-11-19 07:57:21,781 INFO L226 Difference]: Without dead ends: 369 [2023-11-19 07:57:21,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:21,782 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 305 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:21,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 212 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:57:21,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-19 07:57:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 332. [2023-11-19 07:57:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 245 states have (on average 1.6448979591836734) internal successors, (403), 306 states have internal predecessors, (403), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 447 transitions. [2023-11-19 07:57:21,805 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 447 transitions. Word has length 45 [2023-11-19 07:57:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:21,806 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 447 transitions. [2023-11-19 07:57:21,806 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), 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 07:57:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 447 transitions. [2023-11-19 07:57:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:57:21,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:21,807 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:21,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:57:22,024 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:22,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2129819915, now seen corresponding path program 1 times [2023-11-19 07:57:22,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040127913] [2023-11-19 07:57:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:22,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023148794] [2023-11-19 07:57:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:22,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,046 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:57:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:22,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:22,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:22,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:22,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040127913] [2023-11-19 07:57:22,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:22,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023148794] [2023-11-19 07:57:22,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023148794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:22,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:22,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:22,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298456570] [2023-11-19 07:57:22,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:22,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:22,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:22,140 INFO L87 Difference]: Start difference. First operand 332 states and 447 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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 07:57:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:22,193 INFO L93 Difference]: Finished difference Result 377 states and 465 transitions. [2023-11-19 07:57:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:22,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2023-11-19 07:57:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:22,198 INFO L225 Difference]: With dead ends: 377 [2023-11-19 07:57:22,198 INFO L226 Difference]: Without dead ends: 373 [2023-11-19 07:57:22,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 07:57:22,200 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 85 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:22,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 298 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-19 07:57:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 334. [2023-11-19 07:57:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 247 states have (on average 1.6234817813765183) internal successors, (401), 308 states have internal predecessors, (401), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 445 transitions. [2023-11-19 07:57:22,231 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 445 transitions. Word has length 46 [2023-11-19 07:57:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:22,232 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 445 transitions. [2023-11-19 07:57:22,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 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 07:57:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 445 transitions. [2023-11-19 07:57:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 07:57:22,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:22,233 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:22,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:22,448 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:22,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1942455123, now seen corresponding path program 1 times [2023-11-19 07:57:22,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921090289] [2023-11-19 07:57:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968680630] [2023-11-19 07:57:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,462 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:57:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:22,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:22,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:22,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921090289] [2023-11-19 07:57:22,589 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:22,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968680630] [2023-11-19 07:57:22,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968680630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:22,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:22,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918818815] [2023-11-19 07:57:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:22,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:22,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:22,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:22,592 INFO L87 Difference]: Start difference. First operand 334 states and 445 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 07:57:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:22,721 INFO L93 Difference]: Finished difference Result 373 states and 459 transitions. [2023-11-19 07:57:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:22,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 48 [2023-11-19 07:57:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:22,724 INFO L225 Difference]: With dead ends: 373 [2023-11-19 07:57:22,725 INFO L226 Difference]: Without dead ends: 371 [2023-11-19 07:57:22,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 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 07:57:22,726 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 154 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:22,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 309 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-19 07:57:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 335. [2023-11-19 07:57:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 248 states have (on average 1.6129032258064515) internal successors, (400), 309 states have internal predecessors, (400), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 07:57:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 444 transitions. [2023-11-19 07:57:22,750 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 444 transitions. Word has length 48 [2023-11-19 07:57:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:22,751 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 444 transitions. [2023-11-19 07:57:22,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 07:57:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 444 transitions. [2023-11-19 07:57:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 07:57:22,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:22,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:22,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:22,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:22,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash -86566454, now seen corresponding path program 1 times [2023-11-19 07:57:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24770871] [2023-11-19 07:57:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:22,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462810543] [2023-11-19 07:57:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:22,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,978 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:57:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:23,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:23,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:57:23,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:23,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:23,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24770871] [2023-11-19 07:57:23,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:23,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462810543] [2023-11-19 07:57:23,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462810543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:23,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:23,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748936036] [2023-11-19 07:57:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:23,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:23,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:23,101 INFO L87 Difference]: Start difference. First operand 335 states and 444 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 07:57:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:23,268 INFO L93 Difference]: Finished difference Result 371 states and 456 transitions. [2023-11-19 07:57:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 49 [2023-11-19 07:57:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:23,271 INFO L225 Difference]: With dead ends: 371 [2023-11-19 07:57:23,272 INFO L226 Difference]: Without dead ends: 352 [2023-11-19 07:57:23,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 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 07:57:23,273 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 148 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:23,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 313 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-19 07:57:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 319. [2023-11-19 07:57:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 295 states have internal predecessors, (383), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 425 transitions. [2023-11-19 07:57:23,294 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 425 transitions. Word has length 49 [2023-11-19 07:57:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:23,295 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 425 transitions. [2023-11-19 07:57:23,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 07:57:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 425 transitions. [2023-11-19 07:57:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:57:23,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:23,296 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:23,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:23,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:23,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:23,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1104239039, now seen corresponding path program 1 times [2023-11-19 07:57:23,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:23,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347517288] [2023-11-19 07:57:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:23,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:23,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867845852] [2023-11-19 07:57:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:23,534 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:23,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:57:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:23,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:23,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:57:23,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:23,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:23,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347517288] [2023-11-19 07:57:23,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:23,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867845852] [2023-11-19 07:57:23,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867845852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:23,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:23,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:23,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905565406] [2023-11-19 07:57:23,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:23,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:23,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:23,712 INFO L87 Difference]: Start difference. First operand 319 states and 425 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:57:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:23,957 INFO L93 Difference]: Finished difference Result 362 states and 446 transitions. [2023-11-19 07:57:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:23,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2023-11-19 07:57:23,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:23,960 INFO L225 Difference]: With dead ends: 362 [2023-11-19 07:57:23,960 INFO L226 Difference]: Without dead ends: 361 [2023-11-19 07:57:23,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 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 07:57:23,961 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 271 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:23,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 170 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-19 07:57:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 319. [2023-11-19 07:57:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.6324786324786325) internal successors, (382), 295 states have internal predecessors, (382), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 424 transitions. [2023-11-19 07:57:23,984 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 424 transitions. Word has length 60 [2023-11-19 07:57:23,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:23,985 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 424 transitions. [2023-11-19 07:57:23,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:57:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 424 transitions. [2023-11-19 07:57:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 07:57:23,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:23,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:24,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:24,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:24,203 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:24,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash -344936540, now seen corresponding path program 1 times [2023-11-19 07:57:24,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:24,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960730429] [2023-11-19 07:57:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:24,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:24,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715554549] [2023-11-19 07:57:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:24,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:24,215 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:24,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:57:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:24,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:57:24,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:24,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:24,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960730429] [2023-11-19 07:57:24,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:24,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715554549] [2023-11-19 07:57:24,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715554549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:24,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:24,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:24,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472832391] [2023-11-19 07:57:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:24,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:24,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:24,524 INFO L87 Difference]: Start difference. First operand 319 states and 424 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:24,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:24,870 INFO L93 Difference]: Finished difference Result 361 states and 445 transitions. [2023-11-19 07:57:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:24,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2023-11-19 07:57:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:24,875 INFO L225 Difference]: With dead ends: 361 [2023-11-19 07:57:24,875 INFO L226 Difference]: Without dead ends: 360 [2023-11-19 07:57:24,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 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 07:57:24,876 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 122 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:24,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 238 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:57:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-19 07:57:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 319. [2023-11-19 07:57:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.623931623931624) internal successors, (380), 295 states have internal predecessors, (380), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 422 transitions. [2023-11-19 07:57:24,902 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 422 transitions. Word has length 70 [2023-11-19 07:57:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:24,902 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 422 transitions. [2023-11-19 07:57:24,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 422 transitions. [2023-11-19 07:57:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 07:57:24,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:24,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:24,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:25,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 07:57:25,119 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:25,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:25,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2103098027, now seen corresponding path program 1 times [2023-11-19 07:57:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129677142] [2023-11-19 07:57:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:25,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:25,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:25,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248718118] [2023-11-19 07:57:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:25,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:25,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:25,131 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:25,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:57:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:25,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:25,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:57:27,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:27,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129677142] [2023-11-19 07:57:27,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248718118] [2023-11-19 07:57:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248718118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:27,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:27,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787606591] [2023-11-19 07:57:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=5, Unknown=1, NotChecked=0, Total=12 [2023-11-19 07:57:27,465 INFO L87 Difference]: Start difference. First operand 319 states and 422 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:29,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:57:31,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 07:57:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:31,623 INFO L93 Difference]: Finished difference Result 360 states and 443 transitions. [2023-11-19 07:57:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:31,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2023-11-19 07:57:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:31,626 INFO L225 Difference]: With dead ends: 360 [2023-11-19 07:57:31,626 INFO L226 Difference]: Without dead ends: 359 [2023-11-19 07:57:31,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=6, Invalid=5, Unknown=1, NotChecked=0, Total=12 [2023-11-19 07:57:31,627 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 59 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:31,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 342 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 07:57:31,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-19 07:57:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2023-11-19 07:57:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.6153846153846154) internal successors, (378), 295 states have internal predecessors, (378), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 420 transitions. [2023-11-19 07:57:31,652 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 420 transitions. Word has length 71 [2023-11-19 07:57:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:31,652 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 420 transitions. [2023-11-19 07:57:31,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 420 transitions. [2023-11-19 07:57:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 07:57:31,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:31,654 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:31,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:31,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 07:57:31,868 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:31,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash -771529274, now seen corresponding path program 1 times [2023-11-19 07:57:31,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:31,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449329699] [2023-11-19 07:57:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:31,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:31,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:31,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892338522] [2023-11-19 07:57:31,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:31,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:31,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:31,879 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:31,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:57:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:31,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:31,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:57:32,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:32,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449329699] [2023-11-19 07:57:32,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:32,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892338522] [2023-11-19 07:57:32,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892338522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:32,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:32,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:32,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987261985] [2023-11-19 07:57:32,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:32,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:32,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:32,007 INFO L87 Difference]: Start difference. First operand 319 states and 420 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:32,177 INFO L93 Difference]: Finished difference Result 349 states and 431 transitions. [2023-11-19 07:57:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2023-11-19 07:57:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:32,182 INFO L225 Difference]: With dead ends: 349 [2023-11-19 07:57:32,183 INFO L226 Difference]: Without dead ends: 347 [2023-11-19 07:57:32,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 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 07:57:32,184 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 118 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:32,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 282 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-19 07:57:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 319. [2023-11-19 07:57:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.5982905982905984) internal successors, (374), 295 states have internal predecessors, (374), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 416 transitions. [2023-11-19 07:57:32,209 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 416 transitions. Word has length 72 [2023-11-19 07:57:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:32,209 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 416 transitions. [2023-11-19 07:57:32,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 416 transitions. [2023-11-19 07:57:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 07:57:32,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:32,211 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:32,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:32,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-19 07:57:32,427 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:32,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1852396407, now seen corresponding path program 1 times [2023-11-19 07:57:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924142240] [2023-11-19 07:57:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:32,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190863717] [2023-11-19 07:57:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:32,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:32,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:32,443 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:32,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:57:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:32,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:32,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:57:32,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924142240] [2023-11-19 07:57:32,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190863717] [2023-11-19 07:57:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190863717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:32,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388561215] [2023-11-19 07:57:32,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:32,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:32,572 INFO L87 Difference]: Start difference. First operand 319 states and 416 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:32,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:32,805 INFO L93 Difference]: Finished difference Result 347 states and 427 transitions. [2023-11-19 07:57:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:32,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2023-11-19 07:57:32,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:32,808 INFO L225 Difference]: With dead ends: 347 [2023-11-19 07:57:32,808 INFO L226 Difference]: Without dead ends: 345 [2023-11-19 07:57:32,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 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 07:57:32,809 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 113 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:32,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 285 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-19 07:57:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 319. [2023-11-19 07:57:32,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.5811965811965811) internal successors, (370), 295 states have internal predecessors, (370), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 412 transitions. [2023-11-19 07:57:32,835 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 412 transitions. Word has length 73 [2023-11-19 07:57:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:32,836 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 412 transitions. [2023-11-19 07:57:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 412 transitions. [2023-11-19 07:57:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:57:32,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:32,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:32,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:33,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:57:33,059 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:33,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1614968788, now seen corresponding path program 1 times [2023-11-19 07:57:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169341124] [2023-11-19 07:57:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:33,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:33,067 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:33,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793912664] [2023-11-19 07:57:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:33,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:33,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:33,069 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:33,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:57:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:33,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:57:33,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 07:57:33,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 07:57:33,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169341124] [2023-11-19 07:57:33,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793912664] [2023-11-19 07:57:33,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793912664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:33,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:57:33,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:57:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032687042] [2023-11-19 07:57:33,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:33,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:33,695 INFO L87 Difference]: Start difference. First operand 319 states and 412 transitions. Second operand has 9 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:57:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:34,956 INFO L93 Difference]: Finished difference Result 388 states and 439 transitions. [2023-11-19 07:57:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:34,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 78 [2023-11-19 07:57:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:34,960 INFO L225 Difference]: With dead ends: 388 [2023-11-19 07:57:34,960 INFO L226 Difference]: Without dead ends: 387 [2023-11-19 07:57:34,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:57:34,962 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 251 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:34,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 460 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:57:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-19 07:57:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 319. [2023-11-19 07:57:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.5683760683760684) internal successors, (367), 295 states have internal predecessors, (367), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 409 transitions. [2023-11-19 07:57:34,991 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 409 transitions. Word has length 78 [2023-11-19 07:57:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:34,991 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 409 transitions. [2023-11-19 07:57:34,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-19 07:57:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 409 transitions. [2023-11-19 07:57:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:57:34,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:34,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:35,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:35,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:57:35,217 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:35,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1475575261, now seen corresponding path program 1 times [2023-11-19 07:57:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:35,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855214684] [2023-11-19 07:57:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:35,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:35,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522507190] [2023-11-19 07:57:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:35,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:35,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:35,246 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:35,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 07:57:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:35,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:57:35,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 07:57:35,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 07:57:36,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:36,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855214684] [2023-11-19 07:57:36,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522507190] [2023-11-19 07:57:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522507190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:36,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:57:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 07:57:36,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745885923] [2023-11-19 07:57:36,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:36,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:57:36,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:57:36,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:57:36,189 INFO L87 Difference]: Start difference. First operand 319 states and 409 transitions. Second operand has 11 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-19 07:57:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:37,007 INFO L93 Difference]: Finished difference Result 387 states and 436 transitions. [2023-11-19 07:57:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:37,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 79 [2023-11-19 07:57:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:37,011 INFO L225 Difference]: With dead ends: 387 [2023-11-19 07:57:37,011 INFO L226 Difference]: Without dead ends: 386 [2023-11-19 07:57:37,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:57:37,013 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 521 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:37,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 692 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:57:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-19 07:57:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 319. [2023-11-19 07:57:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.5555555555555556) internal successors, (364), 295 states have internal predecessors, (364), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 406 transitions. [2023-11-19 07:57:37,042 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 406 transitions. Word has length 79 [2023-11-19 07:57:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:37,043 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 406 transitions. [2023-11-19 07:57:37,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 12.25) internal successors, (98), 9 states have internal predecessors, (98), 4 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-19 07:57:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 406 transitions. [2023-11-19 07:57:37,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:57:37,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:37,045 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:37,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:37,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:57:37,259 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:37,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:37,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1501807026, now seen corresponding path program 1 times [2023-11-19 07:57:37,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:37,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809397123] [2023-11-19 07:57:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:37,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:37,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:37,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568012801] [2023-11-19 07:57:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:37,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:37,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:37,274 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:37,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-19 07:57:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:37,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:57:37,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 07:57:37,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:40,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:40,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809397123] [2023-11-19 07:57:40,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:40,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568012801] [2023-11-19 07:57:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568012801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:40,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:40,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:57:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024406458] [2023-11-19 07:57:40,142 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2023-11-19 07:57:40,144 INFO L87 Difference]: Start difference. First operand 319 states and 406 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:40,756 INFO L93 Difference]: Finished difference Result 343 states and 417 transitions. [2023-11-19 07:57:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:40,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-11-19 07:57:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:40,759 INFO L225 Difference]: With dead ends: 343 [2023-11-19 07:57:40,759 INFO L226 Difference]: Without dead ends: 340 [2023-11-19 07:57:40,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2023-11-19 07:57:40,760 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 236 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:40,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 341 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:57:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-19 07:57:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 319. [2023-11-19 07:57:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.5299145299145298) internal successors, (358), 295 states have internal predecessors, (358), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 400 transitions. [2023-11-19 07:57:40,807 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 400 transitions. Word has length 80 [2023-11-19 07:57:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:40,808 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 400 transitions. [2023-11-19 07:57:40,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 400 transitions. [2023-11-19 07:57:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:57:40,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:40,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:40,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:41,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:57:41,031 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:41,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash 688622591, now seen corresponding path program 1 times [2023-11-19 07:57:41,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:41,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192657757] [2023-11-19 07:57:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:41,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:41,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655022860] [2023-11-19 07:57:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:41,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:41,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:41,047 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:41,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-19 07:57:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:41,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:57:41,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 07:57:41,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:42,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192657757] [2023-11-19 07:57:42,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:42,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655022860] [2023-11-19 07:57:42,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655022860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:42,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:42,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:57:42,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918878893] [2023-11-19 07:57:42,076 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:42,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:57:42,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:57:42,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:42,078 INFO L87 Difference]: Start difference. First operand 319 states and 400 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:42,740 INFO L93 Difference]: Finished difference Result 332 states and 401 transitions. [2023-11-19 07:57:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:57:42,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2023-11-19 07:57:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:42,743 INFO L225 Difference]: With dead ends: 332 [2023-11-19 07:57:42,743 INFO L226 Difference]: Without dead ends: 329 [2023-11-19 07:57:42,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:57:42,744 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 185 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:42,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 276 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:57:42,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-19 07:57:42,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 319. [2023-11-19 07:57:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 234 states have (on average 1.5042735042735043) internal successors, (352), 295 states have internal predecessors, (352), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 394 transitions. [2023-11-19 07:57:42,769 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 394 transitions. Word has length 81 [2023-11-19 07:57:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:42,770 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 394 transitions. [2023-11-19 07:57:42,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 07:57:42,770 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 394 transitions. [2023-11-19 07:57:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 07:57:42,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:42,772 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:42,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-19 07:57:42,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:57:42,985 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:42,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1649290795, now seen corresponding path program 1 times [2023-11-19 07:57:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:42,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338176873] [2023-11-19 07:57:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:42,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:43,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:43,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277655856] [2023-11-19 07:57:43,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:43,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:43,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:43,003 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:43,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-19 07:57:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:43,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:57:43,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:43,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:43,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:43,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338176873] [2023-11-19 07:57:43,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:43,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277655856] [2023-11-19 07:57:43,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277655856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:43,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:43,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:43,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832413817] [2023-11-19 07:57:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:43,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:43,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:43,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:43,086 INFO L87 Difference]: Start difference. First operand 319 states and 394 transitions. Second operand has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 07:57:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:43,148 INFO L93 Difference]: Finished difference Result 319 states and 394 transitions. [2023-11-19 07:57:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 94 [2023-11-19 07:57:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:43,154 INFO L225 Difference]: With dead ends: 319 [2023-11-19 07:57:43,154 INFO L226 Difference]: Without dead ends: 318 [2023-11-19 07:57:43,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 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 07:57:43,155 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 48 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:43,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 256 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-19 07:57:43,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-19 07:57:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 234 states have (on average 1.4871794871794872) internal successors, (348), 294 states have internal predecessors, (348), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 390 transitions. [2023-11-19 07:57:43,184 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 390 transitions. Word has length 94 [2023-11-19 07:57:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:43,189 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 390 transitions. [2023-11-19 07:57:43,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 07:57:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 390 transitions. [2023-11-19 07:57:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-19 07:57:43,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:43,190 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:43,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:43,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:43,412 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:43,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash 411593070, now seen corresponding path program 1 times [2023-11-19 07:57:43,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:43,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573175517] [2023-11-19 07:57:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:43,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:43,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:43,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422150115] [2023-11-19 07:57:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:43,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:43,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:43,423 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:43,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-19 07:57:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:43,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:43,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:43,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:43,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573175517] [2023-11-19 07:57:43,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422150115] [2023-11-19 07:57:43,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422150115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:43,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621840633] [2023-11-19 07:57:43,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:43,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:43,724 INFO L87 Difference]: Start difference. First operand 318 states and 390 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 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 07:57:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:44,618 INFO L93 Difference]: Finished difference Result 328 states and 391 transitions. [2023-11-19 07:57:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:44,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 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 95 [2023-11-19 07:57:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:44,622 INFO L225 Difference]: With dead ends: 328 [2023-11-19 07:57:44,622 INFO L226 Difference]: Without dead ends: 327 [2023-11-19 07:57:44,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:44,624 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 329 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:44,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 225 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:57:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-19 07:57:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 318. [2023-11-19 07:57:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 234 states have (on average 1.482905982905983) internal successors, (347), 294 states have internal predecessors, (347), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:44,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 389 transitions. [2023-11-19 07:57:44,651 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 389 transitions. Word has length 95 [2023-11-19 07:57:44,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:44,652 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 389 transitions. [2023-11-19 07:57:44,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 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 07:57:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 389 transitions. [2023-11-19 07:57:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 07:57:44,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:44,654 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:44,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:44,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-19 07:57:44,867 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:44,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash 402415118, now seen corresponding path program 1 times [2023-11-19 07:57:44,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:44,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426080752] [2023-11-19 07:57:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:44,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:44,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111610563] [2023-11-19 07:57:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:44,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:44,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:44,888 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:44,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-19 07:57:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:44,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:44,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:45,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:45,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:45,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426080752] [2023-11-19 07:57:45,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111610563] [2023-11-19 07:57:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111610563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:45,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205987535] [2023-11-19 07:57:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:45,062 INFO L87 Difference]: Start difference. First operand 318 states and 389 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 07:57:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:45,557 INFO L93 Difference]: Finished difference Result 335 states and 400 transitions. [2023-11-19 07:57:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:45,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 97 [2023-11-19 07:57:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:45,560 INFO L225 Difference]: With dead ends: 335 [2023-11-19 07:57:45,560 INFO L226 Difference]: Without dead ends: 334 [2023-11-19 07:57:45,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:45,561 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 16 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:45,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 535 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:57:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-19 07:57:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 323. [2023-11-19 07:57:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 239 states have (on average 1.4728033472803348) internal successors, (352), 299 states have internal predecessors, (352), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 394 transitions. [2023-11-19 07:57:45,587 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 394 transitions. Word has length 97 [2023-11-19 07:57:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:45,588 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 394 transitions. [2023-11-19 07:57:45,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 07:57:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 394 transitions. [2023-11-19 07:57:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:57:45,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:45,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:45,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:45,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-19 07:57:45,803 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:45,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash -410033051, now seen corresponding path program 1 times [2023-11-19 07:57:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678392805] [2023-11-19 07:57:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:45,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:45,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159700729] [2023-11-19 07:57:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:45,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:45,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:45,825 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:45,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-19 07:57:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:45,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:45,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:46,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:46,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:46,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678392805] [2023-11-19 07:57:46,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:46,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159700729] [2023-11-19 07:57:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159700729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561944555] [2023-11-19 07:57:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:46,206 INFO L87 Difference]: Start difference. First operand 323 states and 394 transitions. Second operand has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 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 07:57:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:46,451 INFO L93 Difference]: Finished difference Result 334 states and 398 transitions. [2023-11-19 07:57:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 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 98 [2023-11-19 07:57:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:46,455 INFO L225 Difference]: With dead ends: 334 [2023-11-19 07:57:46,455 INFO L226 Difference]: Without dead ends: 333 [2023-11-19 07:57:46,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 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 07:57:46,457 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 17 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:46,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 326 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-19 07:57:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 325. [2023-11-19 07:57:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 241 states have (on average 1.4688796680497926) internal successors, (354), 301 states have internal predecessors, (354), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 07:57:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 396 transitions. [2023-11-19 07:57:46,488 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 396 transitions. Word has length 98 [2023-11-19 07:57:46,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:46,490 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 396 transitions. [2023-11-19 07:57:46,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 4 states have internal predecessors, (64), 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 07:57:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 396 transitions. [2023-11-19 07:57:46,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:57:46,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:46,493 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:46,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:46,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-19 07:57:46,707 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:46,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash -295147689, now seen corresponding path program 1 times [2023-11-19 07:57:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841923325] [2023-11-19 07:57:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:46,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:46,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924006949] [2023-11-19 07:57:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:46,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:46,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:46,727 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:46,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-19 07:57:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:46,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:57:46,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:46,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:47,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841923325] [2023-11-19 07:57:47,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924006949] [2023-11-19 07:57:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924006949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:47,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:57:47,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-19 07:57:47,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468215737] [2023-11-19 07:57:47,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:47,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:57:47,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:47,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:57:47,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:57:47,209 INFO L87 Difference]: Start difference. First operand 325 states and 396 transitions. Second operand has 14 states, 13 states have (on average 10.153846153846153) internal successors, (132), 14 states have internal predecessors, (132), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 07:57:47,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:47,574 INFO L93 Difference]: Finished difference Result 620 states and 715 transitions. [2023-11-19 07:57:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:57:47,575 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.153846153846153) internal successors, (132), 14 states have internal predecessors, (132), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 100 [2023-11-19 07:57:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:47,579 INFO L225 Difference]: With dead ends: 620 [2023-11-19 07:57:47,579 INFO L226 Difference]: Without dead ends: 618 [2023-11-19 07:57:47,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:57:47,581 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 224 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:47,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1589 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-11-19 07:57:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 517. [2023-11-19 07:57:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 416 states have (on average 1.4326923076923077) internal successors, (596), 477 states have internal predecessors, (596), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 07:57:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 664 transitions. [2023-11-19 07:57:47,632 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 664 transitions. Word has length 100 [2023-11-19 07:57:47,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:47,633 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 664 transitions. [2023-11-19 07:57:47,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.153846153846153) internal successors, (132), 14 states have internal predecessors, (132), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 07:57:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 664 transitions. [2023-11-19 07:57:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:57:47,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:47,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:47,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:47,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:47,859 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:47,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash -407452718, now seen corresponding path program 1 times [2023-11-19 07:57:47,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:47,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091076425] [2023-11-19 07:57:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:47,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360641964] [2023-11-19 07:57:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:47,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:47,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:47,870 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:47,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-19 07:57:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:47,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:47,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:48,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:48,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:48,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091076425] [2023-11-19 07:57:48,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360641964] [2023-11-19 07:57:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360641964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:48,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:48,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:48,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979175179] [2023-11-19 07:57:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:48,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:48,047 INFO L87 Difference]: Start difference. First operand 517 states and 664 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 07:57:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:48,133 INFO L93 Difference]: Finished difference Result 533 states and 672 transitions. [2023-11-19 07:57:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:48,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 101 [2023-11-19 07:57:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:48,138 INFO L225 Difference]: With dead ends: 533 [2023-11-19 07:57:48,138 INFO L226 Difference]: Without dead ends: 532 [2023-11-19 07:57:48,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:48,139 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 20 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:48,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 451 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-11-19 07:57:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 520. [2023-11-19 07:57:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 419 states have (on average 1.431980906921241) internal successors, (600), 480 states have internal predecessors, (600), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 07:57:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 668 transitions. [2023-11-19 07:57:48,189 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 668 transitions. Word has length 101 [2023-11-19 07:57:48,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:48,189 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 668 transitions. [2023-11-19 07:57:48,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 07:57:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 668 transitions. [2023-11-19 07:57:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:57:48,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:48,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:48,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-19 07:57:48,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-19 07:57:48,411 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:48,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash -169085095, now seen corresponding path program 1 times [2023-11-19 07:57:48,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:48,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344817092] [2023-11-19 07:57:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:48,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:48,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:48,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044179823] [2023-11-19 07:57:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:48,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:48,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:48,424 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:48,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-19 07:57:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:48,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:57:48,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:48,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:48,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344817092] [2023-11-19 07:57:48,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:48,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044179823] [2023-11-19 07:57:48,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044179823] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:48,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:57:48,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2023-11-19 07:57:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706208751] [2023-11-19 07:57:48,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:48,864 INFO L87 Difference]: Start difference. First operand 520 states and 668 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 07:57:49,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:49,009 INFO L93 Difference]: Finished difference Result 754 states and 962 transitions. [2023-11-19 07:57:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:57:49,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2023-11-19 07:57:49,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:49,012 INFO L225 Difference]: With dead ends: 754 [2023-11-19 07:57:49,013 INFO L226 Difference]: Without dead ends: 318 [2023-11-19 07:57:49,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:57:49,014 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 131 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:49,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 494 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:49,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-19 07:57:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 306. [2023-11-19 07:57:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 227 states have (on average 1.4669603524229076) internal successors, (333), 283 states have internal predecessors, (333), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:57:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 367 transitions. [2023-11-19 07:57:49,043 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 367 transitions. Word has length 102 [2023-11-19 07:57:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:49,044 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 367 transitions. [2023-11-19 07:57:49,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-19 07:57:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 367 transitions. [2023-11-19 07:57:49,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-19 07:57:49,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:49,045 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:49,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:49,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-19 07:57:49,266 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:49,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash 253867817, now seen corresponding path program 1 times [2023-11-19 07:57:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049524023] [2023-11-19 07:57:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:49,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:49,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:49,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098626928] [2023-11-19 07:57:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:49,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:49,277 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:49,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-19 07:57:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:49,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:49,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:49,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:49,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:49,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049524023] [2023-11-19 07:57:49,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098626928] [2023-11-19 07:57:49,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098626928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:49,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:49,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262228037] [2023-11-19 07:57:49,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:49,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:49,559 INFO L87 Difference]: Start difference. First operand 306 states and 367 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 07:57:49,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:49,668 INFO L93 Difference]: Finished difference Result 309 states and 370 transitions. [2023-11-19 07:57:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:49,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 102 [2023-11-19 07:57:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:49,670 INFO L225 Difference]: With dead ends: 309 [2023-11-19 07:57:49,671 INFO L226 Difference]: Without dead ends: 308 [2023-11-19 07:57:49,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:49,672 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 25 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:49,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 407 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-19 07:57:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2023-11-19 07:57:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 229 states have (on average 1.462882096069869) internal successors, (335), 285 states have internal predecessors, (335), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:57:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 369 transitions. [2023-11-19 07:57:49,696 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 369 transitions. Word has length 102 [2023-11-19 07:57:49,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:49,696 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 369 transitions. [2023-11-19 07:57:49,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 07:57:49,697 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 369 transitions. [2023-11-19 07:57:49,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:57:49,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:49,698 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:49,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-19 07:57:49,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:49,911 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:49,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1428840507, now seen corresponding path program 1 times [2023-11-19 07:57:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6728179] [2023-11-19 07:57:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:49,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:49,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180551438] [2023-11-19 07:57:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:49,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:49,931 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:49,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-19 07:57:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:49,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:49,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:50,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:57:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6728179] [2023-11-19 07:57:50,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180551438] [2023-11-19 07:57:50,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180551438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:50,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:50,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:50,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989884693] [2023-11-19 07:57:50,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:50,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:50,228 INFO L87 Difference]: Start difference. First operand 308 states and 369 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 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 07:57:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:50,406 INFO L93 Difference]: Finished difference Result 311 states and 369 transitions. [2023-11-19 07:57:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:50,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 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 107 [2023-11-19 07:57:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:50,409 INFO L225 Difference]: With dead ends: 311 [2023-11-19 07:57:50,409 INFO L226 Difference]: Without dead ends: 310 [2023-11-19 07:57:50,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:50,410 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 35 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:50,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 264 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:57:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-19 07:57:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2023-11-19 07:57:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 229 states have (on average 1.4585152838427948) internal successors, (334), 285 states have internal predecessors, (334), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:57:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 368 transitions. [2023-11-19 07:57:50,433 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 368 transitions. Word has length 107 [2023-11-19 07:57:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:50,434 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 368 transitions. [2023-11-19 07:57:50,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 5 states have internal predecessors, (73), 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 07:57:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 368 transitions. [2023-11-19 07:57:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:57:50,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:50,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:50,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:50,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:50,655 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:50,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash -852990126, now seen corresponding path program 1 times [2023-11-19 07:57:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:50,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101425900] [2023-11-19 07:57:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:50,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:50,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116435399] [2023-11-19 07:57:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:50,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:50,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:50,673 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:50,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-19 07:57:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:50,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:57:50,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-19 07:57:51,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:53,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101425900] [2023-11-19 07:57:53,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:53,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116435399] [2023-11-19 07:57:53,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116435399] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:53,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:53,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:57:53,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273188266] [2023-11-19 07:57:53,475 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:53,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:53,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:53,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2023-11-19 07:57:53,477 INFO L87 Difference]: Start difference. First operand 308 states and 368 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:57:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:53,949 INFO L93 Difference]: Finished difference Result 382 states and 410 transitions. [2023-11-19 07:57:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:57:53,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 107 [2023-11-19 07:57:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:53,953 INFO L225 Difference]: With dead ends: 382 [2023-11-19 07:57:53,954 INFO L226 Difference]: Without dead ends: 379 [2023-11-19 07:57:53,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2023-11-19 07:57:53,955 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 258 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:53,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 636 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:57:53,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-19 07:57:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 309. [2023-11-19 07:57:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 230 states have (on average 1.4478260869565218) internal successors, (333), 286 states have internal predecessors, (333), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:57:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 367 transitions. [2023-11-19 07:57:53,978 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 367 transitions. Word has length 107 [2023-11-19 07:57:53,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:53,978 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 367 transitions. [2023-11-19 07:57:53,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:57:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 367 transitions. [2023-11-19 07:57:53,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:57:53,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:53,980 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:54,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:54,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-19 07:57:54,194 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:54,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1344382940, now seen corresponding path program 1 times [2023-11-19 07:57:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:54,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057298710] [2023-11-19 07:57:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:54,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:54,208 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332215876] [2023-11-19 07:57:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:54,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:54,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:54,209 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:54,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-19 07:57:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:54,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:54,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:57:54,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057298710] [2023-11-19 07:57:54,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332215876] [2023-11-19 07:57:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332215876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:54,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:54,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2023-11-19 07:57:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59915659] [2023-11-19 07:57:54,596 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:54,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:54,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:54,598 INFO L87 Difference]: Start difference. First operand 309 states and 367 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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 07:57:54,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:54,755 INFO L93 Difference]: Finished difference Result 311 states and 367 transitions. [2023-11-19 07:57:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:54,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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 108 [2023-11-19 07:57:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:54,757 INFO L225 Difference]: With dead ends: 311 [2023-11-19 07:57:54,757 INFO L226 Difference]: Without dead ends: 310 [2023-11-19 07:57:54,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:54,758 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 26 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:54,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 235 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-19 07:57:54,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2023-11-19 07:57:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 230 states have (on average 1.4434782608695653) internal successors, (332), 286 states have internal predecessors, (332), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:57:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 366 transitions. [2023-11-19 07:57:54,780 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 366 transitions. Word has length 108 [2023-11-19 07:57:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:54,781 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 366 transitions. [2023-11-19 07:57:54,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 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 07:57:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 366 transitions. [2023-11-19 07:57:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:57:54,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:54,782 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:54,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:55,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-19 07:57:55,003 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:57:55,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash -672889936, now seen corresponding path program 1 times [2023-11-19 07:57:55,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:55,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717733882] [2023-11-19 07:57:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:55,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:55,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:57:55,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79207475] [2023-11-19 07:57:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:55,031 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:55,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-19 07:57:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:55,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:57:55,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-19 07:57:55,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:59,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:59,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717733882] [2023-11-19 07:57:59,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:57:59,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79207475] [2023-11-19 07:57:59,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79207475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:59,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:57:59,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:57:59,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180031196] [2023-11-19 07:57:59,726 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:59,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:57:59,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:59,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:57:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=94, Unknown=2, NotChecked=0, Total=132 [2023-11-19 07:57:59,727 INFO L87 Difference]: Start difference. First operand 309 states and 366 transitions. Second operand has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:58:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:00,188 INFO L93 Difference]: Finished difference Result 381 states and 406 transitions. [2023-11-19 07:58:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:58:00,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 108 [2023-11-19 07:58:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:00,191 INFO L225 Difference]: With dead ends: 381 [2023-11-19 07:58:00,191 INFO L226 Difference]: Without dead ends: 378 [2023-11-19 07:58:00,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=50, Invalid=130, Unknown=2, NotChecked=0, Total=182 [2023-11-19 07:58:00,192 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 375 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:00,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 454 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:58:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-19 07:58:00,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 310. [2023-11-19 07:58:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 231 states have (on average 1.432900432900433) internal successors, (331), 287 states have internal predecessors, (331), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:58:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 365 transitions. [2023-11-19 07:58:00,236 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 365 transitions. Word has length 108 [2023-11-19 07:58:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:00,236 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 365 transitions. [2023-11-19 07:58:00,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:58:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 365 transitions. [2023-11-19 07:58:00,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-19 07:58:00,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:00,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:00,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:00,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-19 07:58:00,459 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 65 more)] === [2023-11-19 07:58:00,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:00,459 INFO L85 PathProgramCache]: Analyzing trace with hash 615248660, now seen corresponding path program 1 times [2023-11-19 07:58:00,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:00,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884501050] [2023-11-19 07:58:00,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:00,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:00,474 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:00,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834870845] [2023-11-19 07:58:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:00,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:00,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:00,476 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:00,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4a2d873-d1b9-4b34-8782-627accff1f9a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-19 07:58:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:00,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:58:00,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-19 07:58:01,045 INFO L327 TraceCheckSpWp]: Computing backward predicates...