./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 76fd23ddcb7e8fff12decb053b84ed59e907e32bdbc4e822256bdb820e1311ef --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:03:17,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:03:17,159 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-25 00:03:17,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:03:17,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:03:17,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:03:17,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:03:17,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:03:17,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:03:17,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:03:17,218 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:03:17,219 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:03:17,219 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:03:17,221 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:03:17,222 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:03:17,222 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:03:17,223 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:03:17,223 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:03:17,224 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:03:17,224 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:03:17,225 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:03:17,225 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:03:17,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:03:17,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:03:17,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:03:17,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:03:17,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:03:17,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:03:17,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:03:17,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:03:17,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:03:17,233 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:03:17,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:03:17,233 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:03:17,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:03:17,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:03:17,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:03:17,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:03:17,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:03:17,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:17,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:03:17,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:03:17,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:03:17,237 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:03:17,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:03:17,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:03:17,239 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:03:17,239 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:03:17,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:03:17,240 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fd23ddcb7e8fff12decb053b84ed59e907e32bdbc4e822256bdb820e1311ef [2023-11-25 00:03:17,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:03:17,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:03:17,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:03:17,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:03:17,576 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:03:17,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c [2023-11-25 00:03:20,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:03:20,955 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:03:20,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c [2023-11-25 00:03:20,965 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/data/c5e7f96ee/d6d664077b2b487bbb2ace4ba73f4b51/FLAGfe853da39 [2023-11-25 00:03:20,978 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/data/c5e7f96ee/d6d664077b2b487bbb2ace4ba73f4b51 [2023-11-25 00:03:20,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:03:20,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:03:20,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:20,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:03:20,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:03:20,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:20,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52637971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:20, skipping insertion in model container [2023-11-25 00:03:20,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:20" (1/1) ... [2023-11-25 00:03:21,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:03:21,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:21,221 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:03:21,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:21,266 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:03:21,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21 WrapperNode [2023-11-25 00:03:21,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:21,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:21,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:03:21,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:03:21,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,319 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 156 [2023-11-25 00:03:21,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:21,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:03:21,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:03:21,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:03:21,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:03:21,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:03:21,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:03:21,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:03:21,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (1/1) ... [2023-11-25 00:03:21,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:21,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:21,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:03:21,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:03:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:03:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:03:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:03:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:03:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:03:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:03:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:03:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:03:21,527 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:03:21,529 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:03:22,049 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:03:22,095 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:03:22,096 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-25 00:03:22,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:22 BoogieIcfgContainer [2023-11-25 00:03:22,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:03:22,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:03:22,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:03:22,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:03:22,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:03:20" (1/3) ... [2023-11-25 00:03:22,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:22, skipping insertion in model container [2023-11-25 00:03:22,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:21" (2/3) ... [2023-11-25 00:03:22,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77c9ac0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:22, skipping insertion in model container [2023-11-25 00:03:22,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:22" (3/3) ... [2023-11-25 00:03:22,130 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound10.c [2023-11-25 00:03:22,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:03:22,151 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2023-11-25 00:03:22,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:03:22,215 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=FINITE_AUTOMATA, 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;@535b6e97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:03:22,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-11-25 00:03:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 71 states have (on average 1.9154929577464788) internal successors, (136), 127 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-25 00:03:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:03:22,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:22,236 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:22,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:22,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1447826646, now seen corresponding path program 1 times [2023-11-25 00:03:22,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:22,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101620603] [2023-11-25 00:03:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:22,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:22,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101620603] [2023-11-25 00:03:22,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-25 00:03:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422729224] [2023-11-25 00:03:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:22,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:22,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:22,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:03:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:22,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:03:22,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:22,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422729224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:22,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:22,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:03:22,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938573869] [2023-11-25 00:03:22,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:22,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:03:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:22,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:03:22,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:03:22,537 INFO L87 Difference]: Start difference. First operand has 137 states, 71 states have (on average 1.9154929577464788) internal successors, (136), 127 states have internal predecessors, (136), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:22,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:22,584 INFO L93 Difference]: Finished difference Result 268 states and 293 transitions. [2023-11-25 00:03:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:03:22,586 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-25 00:03:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:22,595 INFO L225 Difference]: With dead ends: 268 [2023-11-25 00:03:22,595 INFO L226 Difference]: Without dead ends: 134 [2023-11-25 00:03:22,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:03:22,603 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:22,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:03:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-25 00:03:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2023-11-25 00:03:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 70 states have (on average 1.8714285714285714) internal successors, (131), 125 states have internal predecessors, (131), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:03:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2023-11-25 00:03:22,659 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 10 [2023-11-25 00:03:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:22,660 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2023-11-25 00:03:22,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2023-11-25 00:03:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:03:22,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:22,662 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:22,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-25 00:03:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:22,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:22,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1447831031, now seen corresponding path program 1 times [2023-11-25 00:03:22,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:22,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981149654] [2023-11-25 00:03:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:23,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:23,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981149654] [2023-11-25 00:03:23,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981149654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:23,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:23,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:23,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963817290] [2023-11-25 00:03:23,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:23,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:23,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:23,049 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:23,128 INFO L93 Difference]: Finished difference Result 168 states and 177 transitions. [2023-11-25 00:03:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:03:23,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-25 00:03:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:23,133 INFO L225 Difference]: With dead ends: 168 [2023-11-25 00:03:23,136 INFO L226 Difference]: Without dead ends: 138 [2023-11-25 00:03:23,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:23,139 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 7 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:23,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 397 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:03:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-25 00:03:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-11-25 00:03:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 74 states have (on average 1.8243243243243243) internal successors, (135), 129 states have internal predecessors, (135), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:03:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 147 transitions. [2023-11-25 00:03:23,169 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 147 transitions. Word has length 10 [2023-11-25 00:03:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:23,170 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 147 transitions. [2023-11-25 00:03:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 147 transitions. [2023-11-25 00:03:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-25 00:03:23,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:23,172 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:23,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:03:23,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:23,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1731564338, now seen corresponding path program 1 times [2023-11-25 00:03:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338355218] [2023-11-25 00:03:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:23,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:23,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051022334] [2023-11-25 00:03:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:23,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:23,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:23,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:23,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:03:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:23,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:03:23,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:23,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:23,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338355218] [2023-11-25 00:03:23,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051022334] [2023-11-25 00:03:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051022334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:23,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:23,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:03:23,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467214763] [2023-11-25 00:03:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:23,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:03:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:03:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:23,326 INFO L87 Difference]: Start difference. First operand 138 states and 147 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-25 00:03:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:23,540 INFO L93 Difference]: Finished difference Result 242 states and 259 transitions. [2023-11-25 00:03:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:03:23,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 14 [2023-11-25 00:03:23,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:23,544 INFO L225 Difference]: With dead ends: 242 [2023-11-25 00:03:23,544 INFO L226 Difference]: Without dead ends: 214 [2023-11-25 00:03:23,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:23,547 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 283 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:23,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 273 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-25 00:03:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 139. [2023-11-25 00:03:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 75 states have (on average 1.8133333333333332) internal successors, (136), 130 states have internal predecessors, (136), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:03:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2023-11-25 00:03:23,565 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 14 [2023-11-25 00:03:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:23,566 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2023-11-25 00:03:23,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-25 00:03:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2023-11-25 00:03:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-25 00:03:23,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:23,568 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:23,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:23,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:23,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:23,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2138888694, now seen corresponding path program 1 times [2023-11-25 00:03:23,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:23,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222021796] [2023-11-25 00:03:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:23,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222021796] [2023-11-25 00:03:23,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222021796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:23,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:03:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788426468] [2023-11-25 00:03:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:23,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:03:23,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:23,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:03:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:03:23,964 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:24,075 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2023-11-25 00:03:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:03:24,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-25 00:03:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:24,081 INFO L225 Difference]: With dead ends: 173 [2023-11-25 00:03:24,082 INFO L226 Difference]: Without dead ends: 172 [2023-11-25 00:03:24,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:03:24,091 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 40 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:24,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 663 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-25 00:03:24,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 141. [2023-11-25 00:03:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 77 states have (on average 1.7922077922077921) internal successors, (138), 132 states have internal predecessors, (138), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:03:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 150 transitions. [2023-11-25 00:03:24,124 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 150 transitions. Word has length 15 [2023-11-25 00:03:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:24,125 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 150 transitions. [2023-11-25 00:03:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 150 transitions. [2023-11-25 00:03:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-25 00:03:24,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:24,127 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:24,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:03:24,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:24,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1881040011, now seen corresponding path program 1 times [2023-11-25 00:03:24,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:24,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218775909] [2023-11-25 00:03:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:24,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:24,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218775909] [2023-11-25 00:03:24,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218775909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:24,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:24,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:03:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462503884] [2023-11-25 00:03:24,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:03:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:03:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:03:24,298 INFO L87 Difference]: Start difference. First operand 141 states and 150 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:24,391 INFO L93 Difference]: Finished difference Result 271 states and 290 transitions. [2023-11-25 00:03:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:03:24,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-25 00:03:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:24,393 INFO L225 Difference]: With dead ends: 271 [2023-11-25 00:03:24,393 INFO L226 Difference]: Without dead ends: 143 [2023-11-25 00:03:24,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:03:24,395 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 10 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:24,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 642 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-25 00:03:24,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2023-11-25 00:03:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 134 states have internal predecessors, (140), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-25 00:03:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 152 transitions. [2023-11-25 00:03:24,421 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 152 transitions. Word has length 16 [2023-11-25 00:03:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:24,422 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 152 transitions. [2023-11-25 00:03:24,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:24,423 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 152 transitions. [2023-11-25 00:03:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-25 00:03:24,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:24,424 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:24,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-25 00:03:24,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:24,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1177346202, now seen corresponding path program 1 times [2023-11-25 00:03:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:24,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039098846] [2023-11-25 00:03:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:24,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:24,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:24,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889666730] [2023-11-25 00:03:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:24,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:24,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:24,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:24,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:03:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:24,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:03:24,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:24,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:24,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039098846] [2023-11-25 00:03:24,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889666730] [2023-11-25 00:03:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889666730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:24,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:03:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294668960] [2023-11-25 00:03:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:24,566 INFO L87 Difference]: Start difference. First operand 143 states and 152 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:24,649 INFO L93 Difference]: Finished difference Result 226 states and 243 transitions. [2023-11-25 00:03:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-25 00:03:24,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:24,651 INFO L225 Difference]: With dead ends: 226 [2023-11-25 00:03:24,652 INFO L226 Difference]: Without dead ends: 222 [2023-11-25 00:03:24,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:24,653 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:24,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 234 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-25 00:03:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 188. [2023-11-25 00:03:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 120 states have (on average 1.7916666666666667) internal successors, (215), 175 states have internal predecessors, (215), 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) [2023-11-25 00:03:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2023-11-25 00:03:24,676 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 20 [2023-11-25 00:03:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:24,677 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2023-11-25 00:03:24,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2023-11-25 00:03:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-25 00:03:24,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:24,678 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:24,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:24,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-25 00:03:24,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:24,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1177345532, now seen corresponding path program 1 times [2023-11-25 00:03:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:24,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099256230] [2023-11-25 00:03:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:25,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099256230] [2023-11-25 00:03:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099256230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:25,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:25,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-25 00:03:25,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056005206] [2023-11-25 00:03:25,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:25,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:03:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:25,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:03:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:03:25,080 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:25,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:25,302 INFO L93 Difference]: Finished difference Result 237 states and 253 transitions. [2023-11-25 00:03:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-25 00:03:25,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-25 00:03:25,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:25,306 INFO L225 Difference]: With dead ends: 237 [2023-11-25 00:03:25,306 INFO L226 Difference]: Without dead ends: 235 [2023-11-25 00:03:25,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:03:25,308 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 106 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:25,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 974 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-25 00:03:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 190. [2023-11-25 00:03:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 121 states have (on average 1.7685950413223142) internal successors, (214), 176 states have internal predecessors, (214), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 234 transitions. [2023-11-25 00:03:25,326 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 234 transitions. Word has length 20 [2023-11-25 00:03:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:25,326 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 234 transitions. [2023-11-25 00:03:25,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 234 transitions. [2023-11-25 00:03:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-25 00:03:25,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:25,329 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:25,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-25 00:03:25,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:25,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2137973206, now seen corresponding path program 1 times [2023-11-25 00:03:25,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:25,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189392488] [2023-11-25 00:03:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:25,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:25,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:25,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189392488] [2023-11-25 00:03:25,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189392488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:25,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:25,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-25 00:03:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338749769] [2023-11-25 00:03:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:25,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:03:25,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:03:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:03:25,555 INFO L87 Difference]: Start difference. First operand 190 states and 234 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:25,719 INFO L93 Difference]: Finished difference Result 390 states and 480 transitions. [2023-11-25 00:03:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-25 00:03:25,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-25 00:03:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:25,722 INFO L225 Difference]: With dead ends: 390 [2023-11-25 00:03:25,723 INFO L226 Difference]: Without dead ends: 215 [2023-11-25 00:03:25,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:03:25,728 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 34 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:25,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 896 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-25 00:03:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 195. [2023-11-25 00:03:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 126 states have (on average 1.746031746031746) internal successors, (220), 181 states have internal predecessors, (220), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 240 transitions. [2023-11-25 00:03:25,750 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 240 transitions. Word has length 21 [2023-11-25 00:03:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:25,750 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 240 transitions. [2023-11-25 00:03:25,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 240 transitions. [2023-11-25 00:03:25,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-25 00:03:25,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:25,752 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:25,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-25 00:03:25,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:25,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1853306492, now seen corresponding path program 1 times [2023-11-25 00:03:25,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:25,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960464607] [2023-11-25 00:03:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:25,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:25,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231331736] [2023-11-25 00:03:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:25,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:25,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:25,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:03:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:25,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:03:25,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:25,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:25,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960464607] [2023-11-25 00:03:25,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231331736] [2023-11-25 00:03:25,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231331736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:25,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137881787] [2023-11-25 00:03:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:03:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:03:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:25,891 INFO L87 Difference]: Start difference. First operand 195 states and 240 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:26,074 INFO L93 Difference]: Finished difference Result 227 states and 244 transitions. [2023-11-25 00:03:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:03:26,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-25 00:03:26,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:26,079 INFO L225 Difference]: With dead ends: 227 [2023-11-25 00:03:26,079 INFO L226 Difference]: Without dead ends: 226 [2023-11-25 00:03:26,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:26,082 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 67 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:26,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 473 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-25 00:03:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2023-11-25 00:03:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 127 states have (on average 1.7401574803149606) internal successors, (221), 182 states have internal predecessors, (221), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 241 transitions. [2023-11-25 00:03:26,097 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 241 transitions. Word has length 22 [2023-11-25 00:03:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:26,097 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 241 transitions. [2023-11-25 00:03:26,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 241 transitions. [2023-11-25 00:03:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-25 00:03:26,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:26,099 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:26,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:26,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-25 00:03:26,305 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:26,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:26,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1617926571, now seen corresponding path program 1 times [2023-11-25 00:03:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:26,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838315197] [2023-11-25 00:03:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:26,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:26,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:26,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055075253] [2023-11-25 00:03:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:26,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:26,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:26,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:26,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:03:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:26,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:03:26,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:26,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:26,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838315197] [2023-11-25 00:03:26,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055075253] [2023-11-25 00:03:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055075253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:26,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:26,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496940763] [2023-11-25 00:03:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:26,492 INFO L87 Difference]: Start difference. First operand 196 states and 241 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:26,635 INFO L93 Difference]: Finished difference Result 226 states and 243 transitions. [2023-11-25 00:03:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:26,635 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-25 00:03:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:26,637 INFO L225 Difference]: With dead ends: 226 [2023-11-25 00:03:26,637 INFO L226 Difference]: Without dead ends: 225 [2023-11-25 00:03:26,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:26,639 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 68 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:26,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 331 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-25 00:03:26,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 197. [2023-11-25 00:03:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.734375) internal successors, (222), 183 states have internal predecessors, (222), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 242 transitions. [2023-11-25 00:03:26,651 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 242 transitions. Word has length 23 [2023-11-25 00:03:26,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:26,651 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 242 transitions. [2023-11-25 00:03:26,652 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 242 transitions. [2023-11-25 00:03:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-25 00:03:26,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:26,653 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:26,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:26,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-25 00:03:26,859 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:26,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1597886264, now seen corresponding path program 1 times [2023-11-25 00:03:26,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:26,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133096962] [2023-11-25 00:03:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:26,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:26,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636733004] [2023-11-25 00:03:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:26,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:26,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:26,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:26,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-25 00:03:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:26,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:03:26,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:27,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:27,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133096962] [2023-11-25 00:03:27,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:27,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636733004] [2023-11-25 00:03:27,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636733004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:27,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:27,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:03:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257921495] [2023-11-25 00:03:27,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:27,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:03:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:03:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:27,096 INFO L87 Difference]: Start difference. First operand 197 states and 242 transitions. Second operand has 6 states, 3 states have (on average 6.333333333333333) internal successors, (19), 5 states have internal predecessors, (19), 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) [2023-11-25 00:03:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:27,235 INFO L93 Difference]: Finished difference Result 224 states and 242 transitions. [2023-11-25 00:03:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:03:27,236 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 6.333333333333333) internal successors, (19), 5 states have internal predecessors, (19), 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 23 [2023-11-25 00:03:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:27,240 INFO L225 Difference]: With dead ends: 224 [2023-11-25 00:03:27,240 INFO L226 Difference]: Without dead ends: 223 [2023-11-25 00:03:27,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:27,241 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 424 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:27,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 333 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-25 00:03:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 197. [2023-11-25 00:03:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 128 states have (on average 1.7265625) internal successors, (221), 183 states have internal predecessors, (221), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 241 transitions. [2023-11-25 00:03:27,256 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 241 transitions. Word has length 23 [2023-11-25 00:03:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:27,256 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 241 transitions. [2023-11-25 00:03:27,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 6.333333333333333) internal successors, (19), 5 states have internal predecessors, (19), 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) [2023-11-25 00:03:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 241 transitions. [2023-11-25 00:03:27,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:03:27,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:27,261 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:27,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-25 00:03:27,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:27,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1383883682, now seen corresponding path program 1 times [2023-11-25 00:03:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:27,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053579363] [2023-11-25 00:03:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:27,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:27,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610462343] [2023-11-25 00:03:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:27,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:27,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:27,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:03:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:27,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:03:27,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:27,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:27,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:27,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053579363] [2023-11-25 00:03:27,612 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:27,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610462343] [2023-11-25 00:03:27,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610462343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:27,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:27,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945669460] [2023-11-25 00:03:27,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:27,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:27,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:27,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:27,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:27,614 INFO L87 Difference]: Start difference. First operand 197 states and 241 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:27,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:27,799 INFO L93 Difference]: Finished difference Result 307 states and 331 transitions. [2023-11-25 00:03:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:27,800 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-25 00:03:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:27,802 INFO L225 Difference]: With dead ends: 307 [2023-11-25 00:03:27,802 INFO L226 Difference]: Without dead ends: 306 [2023-11-25 00:03:27,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:27,803 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 148 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:27,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 381 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-25 00:03:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 203. [2023-11-25 00:03:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 134 states have (on average 1.6940298507462686) internal successors, (227), 189 states have internal predecessors, (227), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2023-11-25 00:03:27,817 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 24 [2023-11-25 00:03:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:27,818 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2023-11-25 00:03:27,818 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2023-11-25 00:03:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-25 00:03:27,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:27,819 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:27,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:28,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-25 00:03:28,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:28,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2005133277, now seen corresponding path program 1 times [2023-11-25 00:03:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:28,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148701398] [2023-11-25 00:03:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:28,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:28,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543637069] [2023-11-25 00:03:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:28,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:28,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:28,035 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:28,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-25 00:03:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:28,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:03:28,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:28,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:28,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148701398] [2023-11-25 00:03:28,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543637069] [2023-11-25 00:03:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543637069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:28,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:28,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:03:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504752752] [2023-11-25 00:03:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:28,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:03:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:03:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:28,221 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 6 states, 3 states have (on average 6.666666666666667) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-11-25 00:03:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:28,349 INFO L93 Difference]: Finished difference Result 230 states and 247 transitions. [2023-11-25 00:03:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:03:28,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 6.666666666666667) internal successors, (20), 5 states have internal predecessors, (20), 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 24 [2023-11-25 00:03:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:28,351 INFO L225 Difference]: With dead ends: 230 [2023-11-25 00:03:28,351 INFO L226 Difference]: Without dead ends: 229 [2023-11-25 00:03:28,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:28,353 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 314 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:28,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 339 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-25 00:03:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 203. [2023-11-25 00:03:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 134 states have (on average 1.6865671641791045) internal successors, (226), 189 states have internal predecessors, (226), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 246 transitions. [2023-11-25 00:03:28,367 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 246 transitions. Word has length 24 [2023-11-25 00:03:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:28,367 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 246 transitions. [2023-11-25 00:03:28,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 6.666666666666667) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-11-25 00:03:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 246 transitions. [2023-11-25 00:03:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-25 00:03:28,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:28,368 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:28,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:28,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-25 00:03:28,581 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:28,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash 49278989, now seen corresponding path program 1 times [2023-11-25 00:03:28,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:28,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614232936] [2023-11-25 00:03:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:28,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:28,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:28,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827640188] [2023-11-25 00:03:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:28,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:28,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:28,592 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:28,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-25 00:03:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:28,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:03:28,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:28,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:28,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:28,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614232936] [2023-11-25 00:03:28,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:28,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827640188] [2023-11-25 00:03:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827640188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:28,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096676214] [2023-11-25 00:03:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:28,719 INFO L87 Difference]: Start difference. First operand 203 states and 246 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:28,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:28,889 INFO L93 Difference]: Finished difference Result 305 states and 328 transitions. [2023-11-25 00:03:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:28,889 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-11-25 00:03:28,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:28,891 INFO L225 Difference]: With dead ends: 305 [2023-11-25 00:03:28,892 INFO L226 Difference]: Without dead ends: 304 [2023-11-25 00:03:28,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:28,893 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 209 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:28,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 290 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-25 00:03:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 204. [2023-11-25 00:03:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 135 states have (on average 1.6814814814814816) internal successors, (227), 190 states have internal predecessors, (227), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 247 transitions. [2023-11-25 00:03:28,909 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 247 transitions. Word has length 25 [2023-11-25 00:03:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:28,910 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 247 transitions. [2023-11-25 00:03:28,910 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 247 transitions. [2023-11-25 00:03:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-25 00:03:28,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:28,911 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:28,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:29,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-25 00:03:29,117 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:29,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:29,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2029589350, now seen corresponding path program 1 times [2023-11-25 00:03:29,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:29,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354054146] [2023-11-25 00:03:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:29,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:29,124 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390334134] [2023-11-25 00:03:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:29,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:29,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:29,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-25 00:03:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:29,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-25 00:03:29,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:29,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:29,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:29,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354054146] [2023-11-25 00:03:29,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:29,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390334134] [2023-11-25 00:03:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390334134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:29,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:03:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312065746] [2023-11-25 00:03:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:29,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:03:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:03:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:03:29,317 INFO L87 Difference]: Start difference. First operand 204 states and 247 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-25 00:03:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:29,798 INFO L93 Difference]: Finished difference Result 287 states and 311 transitions. [2023-11-25 00:03:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:03:29,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 25 [2023-11-25 00:03:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:29,801 INFO L225 Difference]: With dead ends: 287 [2023-11-25 00:03:29,801 INFO L226 Difference]: Without dead ends: 286 [2023-11-25 00:03:29,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:03:29,802 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 484 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:29,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 436 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:03:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-25 00:03:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 204. [2023-11-25 00:03:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 135 states have (on average 1.674074074074074) internal successors, (226), 190 states have internal predecessors, (226), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 246 transitions. [2023-11-25 00:03:29,819 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 246 transitions. Word has length 25 [2023-11-25 00:03:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:29,820 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 246 transitions. [2023-11-25 00:03:29,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-11-25 00:03:29,820 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 246 transitions. [2023-11-25 00:03:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-25 00:03:29,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:29,821 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:29,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:30,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:30,027 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:30,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1527648832, now seen corresponding path program 1 times [2023-11-25 00:03:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430639811] [2023-11-25 00:03:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:30,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:30,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574850431] [2023-11-25 00:03:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:30,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:30,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:30,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-25 00:03:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:30,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:03:30,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:30,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:30,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:30,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430639811] [2023-11-25 00:03:30,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:30,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574850431] [2023-11-25 00:03:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574850431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:30,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264055989] [2023-11-25 00:03:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:30,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:03:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:03:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:30,145 INFO L87 Difference]: Start difference. First operand 204 states and 246 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:30,276 INFO L93 Difference]: Finished difference Result 237 states and 254 transitions. [2023-11-25 00:03:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:03:30,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-11-25 00:03:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:30,279 INFO L225 Difference]: With dead ends: 237 [2023-11-25 00:03:30,279 INFO L226 Difference]: Without dead ends: 236 [2023-11-25 00:03:30,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:30,280 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 65 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:30,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 495 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-25 00:03:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 207. [2023-11-25 00:03:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 138 states have (on average 1.673913043478261) internal successors, (231), 193 states have internal predecessors, (231), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 251 transitions. [2023-11-25 00:03:30,296 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 251 transitions. Word has length 26 [2023-11-25 00:03:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:30,296 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 251 transitions. [2023-11-25 00:03:30,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 251 transitions. [2023-11-25 00:03:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-25 00:03:30,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:30,298 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:30,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:30,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:30,503 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:30,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:30,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1507239685, now seen corresponding path program 1 times [2023-11-25 00:03:30,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:30,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933914094] [2023-11-25 00:03:30,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:30,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:30,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:30,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707775940] [2023-11-25 00:03:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:30,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:30,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:30,515 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:30,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-25 00:03:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:30,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:03:30,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:30,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:30,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:30,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933914094] [2023-11-25 00:03:30,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:30,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707775940] [2023-11-25 00:03:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707775940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:30,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:30,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000971363] [2023-11-25 00:03:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:30,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:30,656 INFO L87 Difference]: Start difference. First operand 207 states and 251 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:30,826 INFO L93 Difference]: Finished difference Result 232 states and 251 transitions. [2023-11-25 00:03:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:30,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-11-25 00:03:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:30,828 INFO L225 Difference]: With dead ends: 232 [2023-11-25 00:03:30,828 INFO L226 Difference]: Without dead ends: 231 [2023-11-25 00:03:30,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:30,829 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 182 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:30,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 218 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-25 00:03:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 207. [2023-11-25 00:03:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 138 states have (on average 1.6666666666666667) internal successors, (230), 193 states have internal predecessors, (230), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 250 transitions. [2023-11-25 00:03:30,844 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 250 transitions. Word has length 26 [2023-11-25 00:03:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:30,846 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 250 transitions. [2023-11-25 00:03:30,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 250 transitions. [2023-11-25 00:03:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-25 00:03:30,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:30,847 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:30,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:31,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-25 00:03:31,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:31,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash 112473711, now seen corresponding path program 1 times [2023-11-25 00:03:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782622186] [2023-11-25 00:03:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:31,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:31,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689288448] [2023-11-25 00:03:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:31,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:31,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:31,063 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:31,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-25 00:03:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:31,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:03:31,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:31,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:31,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782622186] [2023-11-25 00:03:31,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689288448] [2023-11-25 00:03:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689288448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:31,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:31,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:31,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319017352] [2023-11-25 00:03:31,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:31,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:03:31,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:31,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:03:31,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:31,248 INFO L87 Difference]: Start difference. First operand 207 states and 250 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:31,538 INFO L93 Difference]: Finished difference Result 294 states and 319 transitions. [2023-11-25 00:03:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:03:31,539 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-25 00:03:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:31,541 INFO L225 Difference]: With dead ends: 294 [2023-11-25 00:03:31,541 INFO L226 Difference]: Without dead ends: 293 [2023-11-25 00:03:31,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:31,542 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 187 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:31,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 354 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:03:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-25 00:03:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 209. [2023-11-25 00:03:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 140 states have (on average 1.6571428571428573) internal successors, (232), 195 states have internal predecessors, (232), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:31,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 252 transitions. [2023-11-25 00:03:31,557 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 252 transitions. Word has length 27 [2023-11-25 00:03:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:31,557 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 252 transitions. [2023-11-25 00:03:31,557 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 252 transitions. [2023-11-25 00:03:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-25 00:03:31,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:31,558 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:31,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:31,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-25 00:03:31,766 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:31,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:31,767 INFO L85 PathProgramCache]: Analyzing trace with hash -520209924, now seen corresponding path program 1 times [2023-11-25 00:03:31,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:31,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989486745] [2023-11-25 00:03:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:31,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:31,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857778082] [2023-11-25 00:03:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:31,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:31,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:31,777 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:31,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-25 00:03:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:31,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-25 00:03:31,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:32,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:32,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:32,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989486745] [2023-11-25 00:03:32,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:32,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857778082] [2023-11-25 00:03:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857778082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:32,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:32,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:03:32,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907706394] [2023-11-25 00:03:32,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:32,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:03:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:03:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-25 00:03:32,071 INFO L87 Difference]: Start difference. First operand 209 states and 252 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-25 00:03:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:33,194 INFO L93 Difference]: Finished difference Result 288 states and 314 transitions. [2023-11-25 00:03:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:03:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 27 [2023-11-25 00:03:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:33,197 INFO L225 Difference]: With dead ends: 288 [2023-11-25 00:03:33,197 INFO L226 Difference]: Without dead ends: 287 [2023-11-25 00:03:33,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:03:33,198 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 449 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:33,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 405 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-25 00:03:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-25 00:03:33,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 209. [2023-11-25 00:03:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 140 states have (on average 1.65) internal successors, (231), 195 states have internal predecessors, (231), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 251 transitions. [2023-11-25 00:03:33,215 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 251 transitions. Word has length 27 [2023-11-25 00:03:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:33,216 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 251 transitions. [2023-11-25 00:03:33,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2023-11-25 00:03:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 251 transitions. [2023-11-25 00:03:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-25 00:03:33,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:33,217 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:33,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:33,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:33,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1053361639, now seen corresponding path program 1 times [2023-11-25 00:03:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871746726] [2023-11-25 00:03:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:33,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:33,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:33,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011980385] [2023-11-25 00:03:33,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:33,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:33,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:33,438 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:33,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-25 00:03:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:33,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:03:33,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:33,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:33,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:33,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:33,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871746726] [2023-11-25 00:03:33,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:33,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011980385] [2023-11-25 00:03:33,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011980385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:33,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:33,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:33,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918371094] [2023-11-25 00:03:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:33,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:33,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:33,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:33,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:33,546 INFO L87 Difference]: Start difference. First operand 209 states and 251 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:33,752 INFO L93 Difference]: Finished difference Result 236 states and 255 transitions. [2023-11-25 00:03:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:33,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-25 00:03:33,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:33,755 INFO L225 Difference]: With dead ends: 236 [2023-11-25 00:03:33,755 INFO L226 Difference]: Without dead ends: 235 [2023-11-25 00:03:33,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:33,756 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 116 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:33,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 288 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:03:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-25 00:03:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 209. [2023-11-25 00:03:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 140 states have (on average 1.6428571428571428) internal successors, (230), 195 states have internal predecessors, (230), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2023-11-25 00:03:33,774 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 28 [2023-11-25 00:03:33,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:33,774 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2023-11-25 00:03:33,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2023-11-25 00:03:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-25 00:03:33,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:33,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:33,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-25 00:03:33,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:33,981 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:33,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash 713055153, now seen corresponding path program 1 times [2023-11-25 00:03:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:33,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587002098] [2023-11-25 00:03:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:33,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734531369] [2023-11-25 00:03:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:33,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:33,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:33,989 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:33,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-25 00:03:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:34,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:03:34,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:34,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:34,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:34,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587002098] [2023-11-25 00:03:34,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:34,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734531369] [2023-11-25 00:03:34,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734531369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:34,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:34,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-25 00:03:34,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710635829] [2023-11-25 00:03:34,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-25 00:03:34,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-25 00:03:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:03:34,126 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:34,242 INFO L93 Difference]: Finished difference Result 273 states and 317 transitions. [2023-11-25 00:03:34,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-25 00:03:34,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-11-25 00:03:34,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:34,244 INFO L225 Difference]: With dead ends: 273 [2023-11-25 00:03:34,244 INFO L226 Difference]: Without dead ends: 271 [2023-11-25 00:03:34,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:03:34,246 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 108 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:34,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 641 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-25 00:03:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 228. [2023-11-25 00:03:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 159 states have (on average 1.6540880503144655) internal successors, (263), 214 states have internal predecessors, (263), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 283 transitions. [2023-11-25 00:03:34,261 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 283 transitions. Word has length 29 [2023-11-25 00:03:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:34,261 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 283 transitions. [2023-11-25 00:03:34,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 283 transitions. [2023-11-25 00:03:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-25 00:03:34,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:34,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:34,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:34,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-25 00:03:34,469 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:34,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash 629873307, now seen corresponding path program 1 times [2023-11-25 00:03:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:34,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724768311] [2023-11-25 00:03:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:34,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:34,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243058273] [2023-11-25 00:03:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:34,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:34,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:34,478 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:34,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-25 00:03:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:34,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:03:34,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:34,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:03:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:34,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724768311] [2023-11-25 00:03:34,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243058273] [2023-11-25 00:03:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243058273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:03:34,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1474953657] [2023-11-25 00:03:34,765 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-11-25 00:03:34,765 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:03:34,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:03:34,774 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:03:34,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:03:36,783 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-25 00:03:36,833 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:03:41,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1474953657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:03:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [6, 7] total 29 [2023-11-25 00:03:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338522277] [2023-11-25 00:03:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-25 00:03:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-25 00:03:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2023-11-25 00:03:41,721 INFO L87 Difference]: Start difference. First operand 228 states and 283 transitions. Second operand has 18 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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) [2023-11-25 00:03:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:44,544 INFO L93 Difference]: Finished difference Result 380 states and 457 transitions. [2023-11-25 00:03:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-25 00:03:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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 30 [2023-11-25 00:03:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:44,548 INFO L225 Difference]: With dead ends: 380 [2023-11-25 00:03:44,548 INFO L226 Difference]: Without dead ends: 233 [2023-11-25 00:03:44,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2023-11-25 00:03:44,550 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 14 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:44,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 617 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-25 00:03:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-25 00:03:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 219. [2023-11-25 00:03:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.6066666666666667) internal successors, (241), 205 states have internal predecessors, (241), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 261 transitions. [2023-11-25 00:03:44,569 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 261 transitions. Word has length 30 [2023-11-25 00:03:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:44,569 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 261 transitions. [2023-11-25 00:03:44,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 states have internal predecessors, (23), 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) [2023-11-25 00:03:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 261 transitions. [2023-11-25 00:03:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-25 00:03:44,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:44,570 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:44,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:44,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:44,776 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:44,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash 537063827, now seen corresponding path program 1 times [2023-11-25 00:03:44,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:44,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110458174] [2023-11-25 00:03:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:44,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:44,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:44,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437313250] [2023-11-25 00:03:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:44,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:44,793 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:44,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-25 00:03:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:44,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:03:44,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:44,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:44,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110458174] [2023-11-25 00:03:44,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437313250] [2023-11-25 00:03:44,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437313250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:44,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:44,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:44,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614728149] [2023-11-25 00:03:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:03:44,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:03:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:44,954 INFO L87 Difference]: Start difference. First operand 219 states and 261 transitions. Second operand has 5 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:45,360 INFO L93 Difference]: Finished difference Result 254 states and 272 transitions. [2023-11-25 00:03:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:03:45,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-11-25 00:03:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:45,362 INFO L225 Difference]: With dead ends: 254 [2023-11-25 00:03:45,362 INFO L226 Difference]: Without dead ends: 253 [2023-11-25 00:03:45,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:45,363 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 227 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:45,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 317 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:03:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-25 00:03:45,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 219. [2023-11-25 00:03:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.6) internal successors, (240), 205 states have internal predecessors, (240), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 260 transitions. [2023-11-25 00:03:45,383 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 260 transitions. Word has length 34 [2023-11-25 00:03:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:45,383 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 260 transitions. [2023-11-25 00:03:45,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 260 transitions. [2023-11-25 00:03:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-25 00:03:45,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:45,384 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:45,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:45,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:45,591 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:45,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash -530890439, now seen corresponding path program 1 times [2023-11-25 00:03:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163536728] [2023-11-25 00:03:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:45,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:45,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175780416] [2023-11-25 00:03:45,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:45,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:45,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:45,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:45,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-25 00:03:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:45,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:03:45,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:45,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:45,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:45,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163536728] [2023-11-25 00:03:45,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:45,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175780416] [2023-11-25 00:03:45,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175780416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:45,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:45,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:03:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944549074] [2023-11-25 00:03:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:03:45,748 INFO L87 Difference]: Start difference. First operand 219 states and 260 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:46,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:46,060 INFO L93 Difference]: Finished difference Result 253 states and 271 transitions. [2023-11-25 00:03:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:03:46,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2023-11-25 00:03:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:46,064 INFO L225 Difference]: With dead ends: 253 [2023-11-25 00:03:46,064 INFO L226 Difference]: Without dead ends: 252 [2023-11-25 00:03:46,064 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 [2023-11-25 00:03:46,065 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 223 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:46,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 208 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:03:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-25 00:03:46,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 219. [2023-11-25 00:03:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.5933333333333333) internal successors, (239), 205 states have internal predecessors, (239), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2023-11-25 00:03:46,086 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 35 [2023-11-25 00:03:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:46,086 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2023-11-25 00:03:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2023-11-25 00:03:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-25 00:03:46,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:46,087 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:46,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:46,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:46,292 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:46,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 722265685, now seen corresponding path program 1 times [2023-11-25 00:03:46,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:46,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714876908] [2023-11-25 00:03:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:46,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:46,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907048482] [2023-11-25 00:03:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:46,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:46,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:46,300 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:46,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-25 00:03:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:46,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-25 00:03:46,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:46,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:46,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714876908] [2023-11-25 00:03:46,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907048482] [2023-11-25 00:03:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907048482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:46,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:46,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:03:46,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553585442] [2023-11-25 00:03:46,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:46,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-25 00:03:46,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-25 00:03:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:46,517 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 5 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:47,072 INFO L93 Difference]: Finished difference Result 244 states and 264 transitions. [2023-11-25 00:03:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:03:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-11-25 00:03:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:47,074 INFO L225 Difference]: With dead ends: 244 [2023-11-25 00:03:47,074 INFO L226 Difference]: Without dead ends: 243 [2023-11-25 00:03:47,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:47,075 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 208 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:47,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 293 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-25 00:03:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-25 00:03:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2023-11-25 00:03:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.5866666666666667) internal successors, (238), 205 states have internal predecessors, (238), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:47,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 258 transitions. [2023-11-25 00:03:47,093 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 258 transitions. Word has length 36 [2023-11-25 00:03:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:47,093 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 258 transitions. [2023-11-25 00:03:47,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:47,094 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 258 transitions. [2023-11-25 00:03:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-25 00:03:47,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:47,095 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:47,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:47,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-25 00:03:47,300 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:47,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:47,300 INFO L85 PathProgramCache]: Analyzing trace with hash 915399867, now seen corresponding path program 1 times [2023-11-25 00:03:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:47,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353051431] [2023-11-25 00:03:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:47,308 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:47,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733884156] [2023-11-25 00:03:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:47,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:47,312 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:47,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-25 00:03:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:47,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-25 00:03:47,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:03:47,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:47,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:47,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353051431] [2023-11-25 00:03:47,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:47,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733884156] [2023-11-25 00:03:47,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733884156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:47,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:47,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-25 00:03:47,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215489729] [2023-11-25 00:03:47,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:47,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:03:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:03:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:03:47,901 INFO L87 Difference]: Start difference. First operand 219 states and 258 transitions. Second operand has 9 states, 6 states have (on average 5.166666666666667) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:49,899 INFO L93 Difference]: Finished difference Result 300 states and 328 transitions. [2023-11-25 00:03:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-25 00:03:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 5.166666666666667) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2023-11-25 00:03:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:49,901 INFO L225 Difference]: With dead ends: 300 [2023-11-25 00:03:49,902 INFO L226 Difference]: Without dead ends: 299 [2023-11-25 00:03:49,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2023-11-25 00:03:49,902 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 610 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:49,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 376 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-25 00:03:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-25 00:03:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 219. [2023-11-25 00:03:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.58) internal successors, (237), 205 states have internal predecessors, (237), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:03:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 257 transitions. [2023-11-25 00:03:49,929 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 257 transitions. Word has length 37 [2023-11-25 00:03:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:49,929 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 257 transitions. [2023-11-25 00:03:49,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 5.166666666666667) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-25 00:03:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 257 transitions. [2023-11-25 00:03:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-25 00:03:49,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:49,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:49,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:50,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-25 00:03:50,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:50,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:50,136 INFO L85 PathProgramCache]: Analyzing trace with hash 740388260, now seen corresponding path program 1 times [2023-11-25 00:03:50,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:50,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962168767] [2023-11-25 00:03:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:50,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:50,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:50,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982861259] [2023-11-25 00:03:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:50,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:50,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:50,146 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:50,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-25 00:03:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:50,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-25 00:03:50,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:50,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:50,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:50,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962168767] [2023-11-25 00:03:50,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:50,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982861259] [2023-11-25 00:03:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982861259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:50,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:50,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-25 00:03:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230848380] [2023-11-25 00:03:50,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:50,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-25 00:03:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-25 00:03:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-25 00:03:50,312 INFO L87 Difference]: Start difference. First operand 219 states and 257 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:50,562 INFO L93 Difference]: Finished difference Result 363 states and 410 transitions. [2023-11-25 00:03:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-25 00:03:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2023-11-25 00:03:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:50,566 INFO L225 Difference]: With dead ends: 363 [2023-11-25 00:03:50,566 INFO L226 Difference]: Without dead ends: 360 [2023-11-25 00:03:50,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-11-25 00:03:50,567 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 216 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:50,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1177 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:03:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-25 00:03:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 277. [2023-11-25 00:03:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 203 states have (on average 1.6502463054187193) internal successors, (335), 258 states have internal predecessors, (335), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-25 00:03:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 363 transitions. [2023-11-25 00:03:50,598 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 363 transitions. Word has length 39 [2023-11-25 00:03:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:50,599 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 363 transitions. [2023-11-25 00:03:50,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:03:50,599 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 363 transitions. [2023-11-25 00:03:50,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-25 00:03:50,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:50,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:50,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:50,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-25 00:03:50,805 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:50,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash -289860946, now seen corresponding path program 1 times [2023-11-25 00:03:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:50,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160392509] [2023-11-25 00:03:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:50,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:50,812 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:50,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239303040] [2023-11-25 00:03:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:50,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:50,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:50,824 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:50,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-25 00:03:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:50,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:03:50,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:03:50,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:50,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:50,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160392509] [2023-11-25 00:03:50,978 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:50,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239303040] [2023-11-25 00:03:50,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239303040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:50,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:50,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:03:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549606630] [2023-11-25 00:03:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:50,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:03:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:03:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:03:50,980 INFO L87 Difference]: Start difference. First operand 277 states and 363 transitions. Second operand has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-25 00:03:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:51,384 INFO L93 Difference]: Finished difference Result 349 states and 424 transitions. [2023-11-25 00:03:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:03:51,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-25 00:03:51,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:51,389 INFO L225 Difference]: With dead ends: 349 [2023-11-25 00:03:51,389 INFO L226 Difference]: Without dead ends: 348 [2023-11-25 00:03:51,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:03:51,390 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 312 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:51,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 329 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:03:51,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-25 00:03:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 310. [2023-11-25 00:03:51,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 232 states have (on average 1.6293103448275863) internal successors, (378), 287 states have internal predecessors, (378), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-25 00:03:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 414 transitions. [2023-11-25 00:03:51,429 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 414 transitions. Word has length 41 [2023-11-25 00:03:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:51,430 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 414 transitions. [2023-11-25 00:03:51,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-25 00:03:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 414 transitions. [2023-11-25 00:03:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-25 00:03:51,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:51,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:51,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-25 00:03:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-25 00:03:51,631 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:03:51,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1477199662, now seen corresponding path program 1 times [2023-11-25 00:03:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:51,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557541340] [2023-11-25 00:03:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:51,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:51,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:03:51,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454840995] [2023-11-25 00:03:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:51,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:51,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:51,641 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:51,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-25 00:03:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:51,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-25 00:03:51,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:51,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:03:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:03:51,978 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557541340] [2023-11-25 00:03:51,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:03:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454840995] [2023-11-25 00:03:51,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454840995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:03:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1720201839] [2023-11-25 00:03:51,982 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-25 00:03:51,982 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:03:51,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:03:51,982 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:03:51,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:03:53,006 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-25 00:03:53,037 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:03:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1720201839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:57,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:03:57,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [10, 11] total 39 [2023-11-25 00:03:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485746444] [2023-11-25 00:03:57,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-25 00:03:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-25 00:03:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=1257, Unknown=0, NotChecked=0, Total=1560 [2023-11-25 00:03:57,907 INFO L87 Difference]: Start difference. First operand 310 states and 414 transitions. Second operand has 20 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2023-11-25 00:04:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:01,143 INFO L93 Difference]: Finished difference Result 314 states and 418 transitions. [2023-11-25 00:04:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-25 00:04:01,143 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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 40 [2023-11-25 00:04:01,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:01,146 INFO L225 Difference]: With dead ends: 314 [2023-11-25 00:04:01,146 INFO L226 Difference]: Without dead ends: 313 [2023-11-25 00:04:01,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 73 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2023-11-25 00:04:01,148 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 12 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:01,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 660 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-25 00:04:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-25 00:04:01,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-11-25 00:04:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 235 states have (on average 1.6212765957446809) internal successors, (381), 290 states have internal predecessors, (381), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-25 00:04:01,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 417 transitions. [2023-11-25 00:04:01,176 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 417 transitions. Word has length 40 [2023-11-25 00:04:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:01,176 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 417 transitions. [2023-11-25 00:04:01,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.625) internal successors, (26), 16 states have internal predecessors, (26), 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) [2023-11-25 00:04:01,177 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 417 transitions. [2023-11-25 00:04:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-25 00:04:01,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:01,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:01,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-25 00:04:01,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-25 00:04:01,383 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:04:01,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -395754617, now seen corresponding path program 1 times [2023-11-25 00:04:01,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:01,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287268994] [2023-11-25 00:04:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:01,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:01,388 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:01,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938569142] [2023-11-25 00:04:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:01,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:01,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:01,390 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:01,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-25 00:04:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:01,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:04:01,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:04:01,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:04:01,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:01,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287268994] [2023-11-25 00:04:01,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:01,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938569142] [2023-11-25 00:04:01,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938569142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:01,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:04:01,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-25 00:04:01,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122494284] [2023-11-25 00:04:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-25 00:04:01,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-25 00:04:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-25 00:04:01,557 INFO L87 Difference]: Start difference. First operand 313 states and 417 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-25 00:04:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:02,028 INFO L93 Difference]: Finished difference Result 352 states and 426 transitions. [2023-11-25 00:04:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:04:02,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-25 00:04:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:02,031 INFO L225 Difference]: With dead ends: 352 [2023-11-25 00:04:02,031 INFO L226 Difference]: Without dead ends: 351 [2023-11-25 00:04:02,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-25 00:04:02,032 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 307 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:02,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 331 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:04:02,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-25 00:04:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 313. [2023-11-25 00:04:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 235 states have (on average 1.6170212765957446) internal successors, (380), 290 states have internal predecessors, (380), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-25 00:04:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 416 transitions. [2023-11-25 00:04:02,063 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 416 transitions. Word has length 42 [2023-11-25 00:04:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:02,063 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 416 transitions. [2023-11-25 00:04:02,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-25 00:04:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 416 transitions. [2023-11-25 00:04:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-25 00:04:02,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:02,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:02,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-25 00:04:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:02,270 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:04:02,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash 616508880, now seen corresponding path program 1 times [2023-11-25 00:04:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051419590] [2023-11-25 00:04:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:02,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:02,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1779722321] [2023-11-25 00:04:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:02,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:02,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:02,280 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:02,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-25 00:04:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:02,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-25 00:04:02,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:04:02,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:02,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:02,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051419590] [2023-11-25 00:04:02,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:02,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779722321] [2023-11-25 00:04:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779722321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:04:02,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [906468186] [2023-11-25 00:04:02,491 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-11-25 00:04:02,491 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:02,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:02,492 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:02,493 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:03,293 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-25 00:04:03,298 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-25 00:04:03,333 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:04:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [906468186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:04:06,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:04:06,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 25 [2023-11-25 00:04:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319738056] [2023-11-25 00:04:06,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:04:06,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-25 00:04:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:06,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-25 00:04:06,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-11-25 00:04:06,067 INFO L87 Difference]: Start difference. First operand 313 states and 416 transitions. Second operand has 21 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-25 00:04:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:07,774 INFO L93 Difference]: Finished difference Result 355 states and 462 transitions. [2023-11-25 00:04:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-25 00:04:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2023-11-25 00:04:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:07,776 INFO L225 Difference]: With dead ends: 355 [2023-11-25 00:04:07,777 INFO L226 Difference]: Without dead ends: 345 [2023-11-25 00:04:07,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-11-25 00:04:07,778 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 11 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:07,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 560 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-25 00:04:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-25 00:04:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 344. [2023-11-25 00:04:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 261 states have (on average 1.5593869731800767) internal successors, (407), 316 states have internal predecessors, (407), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-25 00:04:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 451 transitions. [2023-11-25 00:04:07,813 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 451 transitions. Word has length 43 [2023-11-25 00:04:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:07,814 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 451 transitions. [2023-11-25 00:04:07,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-25 00:04:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 451 transitions. [2023-11-25 00:04:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-25 00:04:07,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:07,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:04:07,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-25 00:04:08,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:08,021 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2023-11-25 00:04:08,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2045297010, now seen corresponding path program 1 times [2023-11-25 00:04:08,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:08,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806440819] [2023-11-25 00:04:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:08,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:08,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-25 00:04:08,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95660781] [2023-11-25 00:04:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:08,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:08,029 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:08,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c82f6863-1205-4cfe-9524-e56853611df0/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-25 00:04:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:08,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-25 00:04:08,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:04:08,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:04:08,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:08,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806440819] [2023-11-25 00:04:08,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-25 00:04:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95660781] [2023-11-25 00:04:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95660781] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912292333] [2023-11-25 00:04:08,405 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-11-25 00:04:08,405 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:08,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:08,405 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:08,406 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:09,761 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2023-11-25 00:04:09,787 INFO L180 IcfgInterpreter]: Interpretation finished