./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/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_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/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_f4051fd7-258f-480a-97f5-cd19cada2d5a/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 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:20:43,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:20:44,099 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:20:44,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:20:44,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:20:44,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:20:44,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:20:44,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:20:44,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:20:44,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:20:44,165 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:20:44,165 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:20:44,166 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:20:44,168 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:20:44,168 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:20:44,169 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:20:44,169 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:20:44,169 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:20:44,170 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:20:44,170 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:20:44,171 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:20:44,172 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:20:44,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:20:44,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:20:44,174 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:20:44,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:20:44,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:20:44,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:20:44,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:20:44,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:20:44,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:20:44,178 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:20:44,178 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:20:44,178 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:20:44,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:20:44,179 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:20:44,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:20:44,180 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:20:44,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:20:44,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:44,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:20:44,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:20:44,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:20:44,182 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:20:44,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:20:44,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:20:44,183 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:20:44,183 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:20:44,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:20:44,183 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_f4051fd7-258f-480a-97f5-cd19cada2d5a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc [2023-11-24 23:20:44,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:20:44,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:20:44,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:20:44,553 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:20:44,554 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:20:44,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2023-11-24 23:20:47,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:20:48,021 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:20:48,021 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2023-11-24 23:20:48,032 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/data/d9e35b317/aa3105f0749942b589f61ffdbb178ab4/FLAG89149af5c [2023-11-24 23:20:48,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/data/d9e35b317/aa3105f0749942b589f61ffdbb178ab4 [2023-11-24 23:20:48,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:20:48,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:20:48,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:48,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:20:48,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:20:48,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1880f167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48, skipping insertion in model container [2023-11-24 23:20:48,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,099 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:20:48,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:48,312 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:20:48,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:20:48,344 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:20:48,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48 WrapperNode [2023-11-24 23:20:48,345 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:20:48,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:48,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:20:48,346 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:20:48,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,396 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-24 23:20:48,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:20:48,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:20:48,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:20:48,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:20:48,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:20:48,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:20:48,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:20:48,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:20:48,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (1/1) ... [2023-11-24 23:20:48,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:20:48,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:48,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:20:48,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:20:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:20:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:20:48,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:20:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:20:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:20:48,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:20:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:20:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:20:48,610 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:20:48,613 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:20:48,945 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:20:49,006 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:20:49,011 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:20:49,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:49 BoogieIcfgContainer [2023-11-24 23:20:49,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:20:49,018 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:20:49,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:20:49,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:20:49,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:20:48" (1/3) ... [2023-11-24 23:20:49,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9c178a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:49, skipping insertion in model container [2023-11-24 23:20:49,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:20:48" (2/3) ... [2023-11-24 23:20:49,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9c178a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:20:49, skipping insertion in model container [2023-11-24 23:20:49,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:20:49" (3/3) ... [2023-11-24 23:20:49,030 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound20.c [2023-11-24 23:20:49,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:20:49,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-24 23:20:49,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:20:49,134 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;@5d209596, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:20:49,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-24 23:20:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 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) [2023-11-24 23:20:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:20:49,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:49,149 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:49,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:49,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1089399791, now seen corresponding path program 1 times [2023-11-24 23:20:49,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806164766] [2023-11-24 23:20:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:49,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:49,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857634880] [2023-11-24 23:20:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:49,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:49,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:49,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:49,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:20:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:49,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:20:49,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:20:49,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:49,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:49,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806164766] [2023-11-24 23:20:49,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:49,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857634880] [2023-11-24 23:20:49,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857634880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:49,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:49,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:20:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986388841] [2023-11-24 23:20:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:20:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:49,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:20:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:49,626 INFO L87 Difference]: Start difference. First operand has 83 states, 40 states have (on average 1.85) internal successors, (74), 70 states have internal predecessors, (74), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-24 23:20:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:49,875 INFO L93 Difference]: Finished difference Result 152 states and 178 transitions. [2023-11-24 23:20:49,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:20:49,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 14 [2023-11-24 23:20:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:49,886 INFO L225 Difference]: With dead ends: 152 [2023-11-24 23:20:49,886 INFO L226 Difference]: Without dead ends: 74 [2023-11-24 23:20:49,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:49,894 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 175 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:49,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 77 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-24 23:20:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-24 23:20:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 39 states have (on average 1.641025641025641) internal successors, (64), 62 states have internal predecessors, (64), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 23:20:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-11-24 23:20:49,972 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 14 [2023-11-24 23:20:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:49,974 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-11-24 23:20:49,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-24 23:20:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-11-24 23:20:49,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:20:49,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:49,978 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:50,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:50,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-24 23:20:50,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:50,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:50,209 INFO L85 PathProgramCache]: Analyzing trace with hash 588344897, now seen corresponding path program 1 times [2023-11-24 23:20:50,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:50,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14944273] [2023-11-24 23:20:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:50,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:50,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:50,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835891901] [2023-11-24 23:20:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:50,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:50,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:50,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:50,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:20:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:50,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:20:50,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:20:50,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:50,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14944273] [2023-11-24 23:20:50,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835891901] [2023-11-24 23:20:50,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835891901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:50,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:50,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:20:50,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992754567] [2023-11-24 23:20:50,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:20:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:20:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:50,415 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 23:20:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:50,624 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2023-11-24 23:20:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:20:50,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 15 [2023-11-24 23:20:50,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:50,629 INFO L225 Difference]: With dead ends: 97 [2023-11-24 23:20:50,630 INFO L226 Difference]: Without dead ends: 96 [2023-11-24 23:20:50,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:50,632 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 77 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:50,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 120 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:50,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-24 23:20:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2023-11-24 23:20:50,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 65 states have internal predecessors, (67), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 23:20:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2023-11-24 23:20:50,647 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 15 [2023-11-24 23:20:50,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:50,647 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2023-11-24 23:20:50,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 23:20:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2023-11-24 23:20:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:20:50,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:50,649 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:50,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 23:20:50,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:50,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:50,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1150165444, now seen corresponding path program 1 times [2023-11-24 23:20:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014483222] [2023-11-24 23:20:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:50,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:50,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059870646] [2023-11-24 23:20:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:50,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:50,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:50,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:50,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:20:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:50,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:20:50,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:20:51,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:51,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014483222] [2023-11-24 23:20:51,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:51,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059870646] [2023-11-24 23:20:51,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059870646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:51,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:51,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:20:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730914518] [2023-11-24 23:20:51,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:51,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:20:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:20:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:51,031 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:20:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:51,213 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2023-11-24 23:20:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:20:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 19 [2023-11-24 23:20:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:51,216 INFO L225 Difference]: With dead ends: 134 [2023-11-24 23:20:51,216 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:20:51,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:51,218 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 219 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:51,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 97 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:20:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 107. [2023-11-24 23:20:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 66 states have (on average 1.606060606060606) internal successors, (106), 89 states have internal predecessors, (106), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:20:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 136 transitions. [2023-11-24 23:20:51,235 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 136 transitions. Word has length 19 [2023-11-24 23:20:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:51,236 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 136 transitions. [2023-11-24 23:20:51,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:20:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 136 transitions. [2023-11-24 23:20:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:20:51,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:51,238 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:51,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:51,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-24 23:20:51,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:51,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1295390451, now seen corresponding path program 1 times [2023-11-24 23:20:51,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:51,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493409126] [2023-11-24 23:20:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:51,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:51,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:51,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178653866] [2023-11-24 23:20:51,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:51,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:51,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:20:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:51,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:20:51,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:20:51,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:51,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:51,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493409126] [2023-11-24 23:20:51,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:51,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178653866] [2023-11-24 23:20:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178653866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:51,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:51,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:20:51,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211934566] [2023-11-24 23:20:51,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:51,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:20:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:20:51,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:51,625 INFO L87 Difference]: Start difference. First operand 107 states and 136 transitions. Second operand has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:20:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:51,799 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2023-11-24 23:20:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:20:51,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2023-11-24 23:20:51,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:51,801 INFO L225 Difference]: With dead ends: 134 [2023-11-24 23:20:51,801 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:20:51,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:20:51,803 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 161 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:51,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 106 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:20:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:20:51,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 108. [2023-11-24 23:20:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 90 states have internal predecessors, (105), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:20:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2023-11-24 23:20:51,819 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 20 [2023-11-24 23:20:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:51,820 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2023-11-24 23:20:51,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-24 23:20:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2023-11-24 23:20:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:20:51,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:51,821 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:51,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:52,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:52,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:52,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:52,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1502398374, now seen corresponding path program 1 times [2023-11-24 23:20:52,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:52,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981080888] [2023-11-24 23:20:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:52,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:52,047 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840640344] [2023-11-24 23:20:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:52,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:52,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:52,049 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:52,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:20:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:52,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:20:52,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:20:52,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:20:52,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:52,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981080888] [2023-11-24 23:20:52,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:52,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840640344] [2023-11-24 23:20:52,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840640344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:52,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1029859712] [2023-11-24 23:20:52,405 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-24 23:20:52,405 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:20:52,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:20:52,417 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:20:52,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:20:53,208 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-11-24 23:20:53,220 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:20:53,222 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:20:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1029859712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:53,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:20:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 17 [2023-11-24 23:20:53,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075978511] [2023-11-24 23:20:53,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:53,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:20:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:20:53,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:20:53,955 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:20:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:54,497 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2023-11-24 23:20:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:20:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2023-11-24 23:20:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:54,499 INFO L225 Difference]: With dead ends: 116 [2023-11-24 23:20:54,499 INFO L226 Difference]: Without dead ends: 108 [2023-11-24 23:20:54,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-11-24 23:20:54,501 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 211 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:54,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 107 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:20:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-24 23:20:54,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-24 23:20:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 89 states have internal predecessors, (101), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:20:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2023-11-24 23:20:54,527 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 21 [2023-11-24 23:20:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:54,527 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2023-11-24 23:20:54,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:20:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2023-11-24 23:20:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 23:20:54,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:54,529 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:54,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:54,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:54,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:54,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash -36539540, now seen corresponding path program 1 times [2023-11-24 23:20:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:54,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137578207] [2023-11-24 23:20:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:54,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:54,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287758311] [2023-11-24 23:20:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:54,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:54,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:54,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:54,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:20:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:54,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:20:54,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:20:54,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:20:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:20:55,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137578207] [2023-11-24 23:20:55,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287758311] [2023-11-24 23:20:55,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287758311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:20:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1510176855] [2023-11-24 23:20:55,067 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-24 23:20:55,067 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:20:55,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:20:55,068 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:20:55,068 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:20:55,673 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-11-24 23:20:55,678 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:20:55,680 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:20:56,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1510176855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:56,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:20:56,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5, 5] total 19 [2023-11-24 23:20:56,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660583169] [2023-11-24 23:20:56,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 23:20:56,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:56,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 23:20:56,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:20:56,582 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-24 23:20:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:57,320 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2023-11-24 23:20:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:20:57,322 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2023-11-24 23:20:57,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:57,323 INFO L225 Difference]: With dead ends: 141 [2023-11-24 23:20:57,324 INFO L226 Difference]: Without dead ends: 132 [2023-11-24 23:20:57,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:20:57,326 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 92 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:57,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 77 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-24 23:20:57,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-24 23:20:57,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-24 23:20:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 85 states have (on average 1.423529411764706) internal successors, (121), 108 states have internal predecessors, (121), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:20:57,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2023-11-24 23:20:57,370 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 29 [2023-11-24 23:20:57,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:57,372 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2023-11-24 23:20:57,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-24 23:20:57,373 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2023-11-24 23:20:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 23:20:57,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:57,378 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:57,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:57,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:57,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:57,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1788982354, now seen corresponding path program 1 times [2023-11-24 23:20:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:57,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959821837] [2023-11-24 23:20:57,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:57,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120311312] [2023-11-24 23:20:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:57,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:57,625 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:57,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:20:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:57,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:20:57,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:57,829 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:20:57,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:57,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:57,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959821837] [2023-11-24 23:20:57,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120311312] [2023-11-24 23:20:57,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120311312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:57,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:57,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010063748] [2023-11-24 23:20:57,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:57,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:57,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:57,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:57,835 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:20:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:57,940 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2023-11-24 23:20:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:57,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 48 [2023-11-24 23:20:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:57,945 INFO L225 Difference]: With dead ends: 132 [2023-11-24 23:20:57,945 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:20:57,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:57,947 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 43 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:57,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 79 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:20:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-24 23:20:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 85 states have (on average 1.411764705882353) internal successors, (120), 107 states have internal predecessors, (120), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:20:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2023-11-24 23:20:57,973 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 48 [2023-11-24 23:20:57,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:57,974 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2023-11-24 23:20:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:20:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2023-11-24 23:20:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-24 23:20:57,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:57,976 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:57,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-24 23:20:58,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:20:58,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:58,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:58,188 INFO L85 PathProgramCache]: Analyzing trace with hash -376121748, now seen corresponding path program 1 times [2023-11-24 23:20:58,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:58,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887457669] [2023-11-24 23:20:58,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:58,207 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:58,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725040384] [2023-11-24 23:20:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:58,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:58,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:58,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:20:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:58,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:20:58,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:20:58,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:58,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887457669] [2023-11-24 23:20:58,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725040384] [2023-11-24 23:20:58,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725040384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:58,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:58,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:20:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393098431] [2023-11-24 23:20:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:20:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:20:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:58,458 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:20:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:58,586 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2023-11-24 23:20:58,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:20:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2023-11-24 23:20:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:58,589 INFO L225 Difference]: With dead ends: 150 [2023-11-24 23:20:58,589 INFO L226 Difference]: Without dead ends: 149 [2023-11-24 23:20:58,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:20:58,592 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 54 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:58,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 125 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-24 23:20:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-11-24 23:20:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 109 states have internal predecessors, (122), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:20:58,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2023-11-24 23:20:58,630 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 49 [2023-11-24 23:20:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:58,630 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2023-11-24 23:20:58,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-24 23:20:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2023-11-24 23:20:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 23:20:58,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:58,640 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:58,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:20:58,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:58,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash 526726340, now seen corresponding path program 1 times [2023-11-24 23:20:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:58,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844887850] [2023-11-24 23:20:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:58,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:58,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262309228] [2023-11-24 23:20:58,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:58,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:58,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:58,866 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:58,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:20:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:58,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:20:58,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:20:59,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:59,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:59,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844887850] [2023-11-24 23:20:59,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262309228] [2023-11-24 23:20:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262309228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:59,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:20:59,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229569881] [2023-11-24 23:20:59,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:59,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:59,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:59,041 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:20:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:59,132 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2023-11-24 23:20:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:59,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-11-24 23:20:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:59,137 INFO L225 Difference]: With dead ends: 133 [2023-11-24 23:20:59,137 INFO L226 Difference]: Without dead ends: 132 [2023-11-24 23:20:59,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:59,140 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:59,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 56 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:20:59,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-24 23:20:59,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-24 23:20:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 108 states have internal predecessors, (121), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:20:59,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2023-11-24 23:20:59,165 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 52 [2023-11-24 23:20:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:59,165 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2023-11-24 23:20:59,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 23:20:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2023-11-24 23:20:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-24 23:20:59,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:59,168 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:59,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:59,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:59,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:59,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1396457673, now seen corresponding path program 1 times [2023-11-24 23:20:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:59,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076837685] [2023-11-24 23:20:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:59,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:59,387 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:59,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313324248] [2023-11-24 23:20:59,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:59,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:59,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:59,390 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:59,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:20:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:59,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:20:59,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:20:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 23:20:59,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:20:59,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:20:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076837685] [2023-11-24 23:20:59,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:20:59,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313324248] [2023-11-24 23:20:59,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313324248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:20:59,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:20:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:20:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228457015] [2023-11-24 23:20:59,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:20:59,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:20:59,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:20:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:20:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:59,510 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:20:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:20:59,564 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2023-11-24 23:20:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:20:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-11-24 23:20:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:20:59,567 INFO L225 Difference]: With dead ends: 132 [2023-11-24 23:20:59,567 INFO L226 Difference]: Without dead ends: 131 [2023-11-24 23:20:59,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:20:59,569 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 32 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:20:59,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 93 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:20:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-24 23:20:59,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-24 23:20:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 87 states have (on average 1.367816091954023) internal successors, (119), 107 states have internal predecessors, (119), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:20:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2023-11-24 23:20:59,606 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 55 [2023-11-24 23:20:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:20:59,607 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2023-11-24 23:20:59,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:20:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2023-11-24 23:20:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-24 23:20:59,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:20:59,609 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:20:59,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:20:59,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:59,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:20:59,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:20:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash -859509049, now seen corresponding path program 1 times [2023-11-24 23:20:59,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:20:59,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347502705] [2023-11-24 23:20:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:59,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:20:59,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:20:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413520207] [2023-11-24 23:20:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:20:59,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:20:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:20:59,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:20:59,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:20:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:20:59,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:20:59,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-24 23:21:00,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:21:00,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347502705] [2023-11-24 23:21:00,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:21:00,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413520207] [2023-11-24 23:21:00,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413520207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:21:00,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1003223542] [2023-11-24 23:21:00,612 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-11-24 23:21:00,612 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:21:00,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:21:00,613 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:21:00,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:21:08,212 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2023-11-24 23:21:08,214 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:21:08,215 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:21:12,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1003223542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:12,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:21:12,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 22 [2023-11-24 23:21:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369200325] [2023-11-24 23:21:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:12,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 23:21:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 23:21:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:21:12,379 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-24 23:21:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:13,470 INFO L93 Difference]: Finished difference Result 189 states and 222 transitions. [2023-11-24 23:21:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:21:13,471 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 56 [2023-11-24 23:21:13,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:13,473 INFO L225 Difference]: With dead ends: 189 [2023-11-24 23:21:13,474 INFO L226 Difference]: Without dead ends: 165 [2023-11-24 23:21:13,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 18 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:21:13,476 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 158 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:13,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 55 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:21:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-24 23:21:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-11-24 23:21:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 131 states have internal predecessors, (144), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:21:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2023-11-24 23:21:13,508 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 56 [2023-11-24 23:21:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:13,509 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2023-11-24 23:21:13,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-24 23:21:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2023-11-24 23:21:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-24 23:21:13,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:13,511 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:13,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:21:13,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:13,726 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:21:13,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:13,727 INFO L85 PathProgramCache]: Analyzing trace with hash -340514788, now seen corresponding path program 1 times [2023-11-24 23:21:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:13,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108166551] [2023-11-24 23:21:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:13,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:13,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:21:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524227864] [2023-11-24 23:21:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:13,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:13,762 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:13,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:21:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:13,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:21:13,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-24 23:21:13,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:21:13,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108166551] [2023-11-24 23:21:13,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:21:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524227864] [2023-11-24 23:21:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524227864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:13,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:13,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:21:13,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337654128] [2023-11-24 23:21:13,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:13,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:21:13,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:13,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:21:13,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:13,875 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:21:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:13,932 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2023-11-24 23:21:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:21:13,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-11-24 23:21:13,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:13,937 INFO L225 Difference]: With dead ends: 161 [2023-11-24 23:21:13,937 INFO L226 Difference]: Without dead ends: 160 [2023-11-24 23:21:13,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:13,940 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 29 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:13,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 95 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:21:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-24 23:21:13,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-24 23:21:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 130 states have internal predecessors, (142), 25 states have call successors, (25), 4 states have call predecessors, (25), 4 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:21:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2023-11-24 23:21:13,976 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 56 [2023-11-24 23:21:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:13,977 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2023-11-24 23:21:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:21:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2023-11-24 23:21:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-24 23:21:13,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:13,979 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:13,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:21:14,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:14,187 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:21:14,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 436777392, now seen corresponding path program 1 times [2023-11-24 23:21:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:14,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017908597] [2023-11-24 23:21:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:14,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:21:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710531388] [2023-11-24 23:21:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:14,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:14,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:14,220 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:14,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:21:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:14,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-24 23:21:14,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-24 23:21:14,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:21:15,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017908597] [2023-11-24 23:21:15,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:21:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710531388] [2023-11-24 23:21:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710531388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:21:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1197151908] [2023-11-24 23:21:15,775 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-24 23:21:15,775 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:21:15,776 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:21:15,776 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:21:15,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:21:20,674 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-11-24 23:21:20,676 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-24 23:21:20,677 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:21:26,292 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5603#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (div |ULTIMATE.start_main_~a~0#1| 2) 4611686018427387903) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ 4611686018427387904 (div |ULTIMATE.start_main_~b~0#1| 2))) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= (div |ULTIMATE.start_main_~b~0#1| 2) 4611686018427387903) (<= |ULTIMATE.start_main_~r~0#1| 20) (= |ULTIMATE.start_main_~q~0#1| 0) (= (mod |ULTIMATE.start_main_~a~0#1| 2) 0) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| 20) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-11-24 23:21:26,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:21:26,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:21:26,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-24 23:21:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645714148] [2023-11-24 23:21:26,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:21:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:21:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:21:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2023-11-24 23:21:26,297 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:21:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:31,781 INFO L93 Difference]: Finished difference Result 364 states and 438 transitions. [2023-11-24 23:21:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 23:21:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 59 [2023-11-24 23:21:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:31,786 INFO L225 Difference]: With dead ends: 364 [2023-11-24 23:21:31,786 INFO L226 Difference]: Without dead ends: 361 [2023-11-24 23:21:31,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=337, Invalid=1643, Unknown=0, NotChecked=0, Total=1980 [2023-11-24 23:21:31,789 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 472 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:31,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 288 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-24 23:21:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-24 23:21:31,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 231. [2023-11-24 23:21:31,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 188 states have internal predecessors, (227), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:21:31,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 303 transitions. [2023-11-24 23:21:31,842 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 303 transitions. Word has length 59 [2023-11-24 23:21:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:31,842 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 303 transitions. [2023-11-24 23:21:31,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.5) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-24 23:21:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 303 transitions. [2023-11-24 23:21:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 23:21:31,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:31,845 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:31,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-24 23:21:32,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:32,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:21:32,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash 862919785, now seen corresponding path program 1 times [2023-11-24 23:21:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:32,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176257554] [2023-11-24 23:21:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:32,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:32,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:21:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448473433] [2023-11-24 23:21:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:32,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:32,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:32,089 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:32,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 23:21:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:32,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:21:32,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-24 23:21:32,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:21:32,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176257554] [2023-11-24 23:21:32,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:21:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448473433] [2023-11-24 23:21:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448473433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:32,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:32,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:21:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227857419] [2023-11-24 23:21:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:32,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:21:32,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:32,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:21:32,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:32,252 INFO L87 Difference]: Start difference. First operand 231 states and 303 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:21:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:32,359 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2023-11-24 23:21:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:21:32,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2023-11-24 23:21:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:32,365 INFO L225 Difference]: With dead ends: 231 [2023-11-24 23:21:32,365 INFO L226 Difference]: Without dead ends: 229 [2023-11-24 23:21:32,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:32,366 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:32,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 56 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:21:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-24 23:21:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-24 23:21:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 169 states have (on average 1.3076923076923077) internal successors, (221), 186 states have internal predecessors, (221), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:21:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 297 transitions. [2023-11-24 23:21:32,416 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 297 transitions. Word has length 65 [2023-11-24 23:21:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:32,417 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 297 transitions. [2023-11-24 23:21:32,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:21:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 297 transitions. [2023-11-24 23:21:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:21:32,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:32,419 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:32,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-24 23:21:32,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-24 23:21:32,626 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:21:32,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash 980709646, now seen corresponding path program 1 times [2023-11-24 23:21:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:32,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18958733] [2023-11-24 23:21:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:32,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:32,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:21:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618423762] [2023-11-24 23:21:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:32,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:32,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:32,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:32,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-24 23:21:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:32,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:21:32,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-24 23:21:32,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:21:32,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18958733] [2023-11-24 23:21:32,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:21:32,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618423762] [2023-11-24 23:21:32,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618423762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:21:32,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:21:32,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:21:32,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105945467] [2023-11-24 23:21:32,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:21:32,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:21:32,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:21:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:21:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:32,806 INFO L87 Difference]: Start difference. First operand 229 states and 297 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:21:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:21:32,922 INFO L93 Difference]: Finished difference Result 229 states and 297 transitions. [2023-11-24 23:21:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:21:32,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2023-11-24 23:21:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:21:32,928 INFO L225 Difference]: With dead ends: 229 [2023-11-24 23:21:32,928 INFO L226 Difference]: Without dead ends: 225 [2023-11-24 23:21:32,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:21:32,929 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:21:32,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 58 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:21:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-24 23:21:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-11-24 23:21:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 167 states have (on average 1.2754491017964071) internal successors, (213), 182 states have internal predecessors, (213), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-24 23:21:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 289 transitions. [2023-11-24 23:21:32,997 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 289 transitions. Word has length 66 [2023-11-24 23:21:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:21:32,997 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 289 transitions. [2023-11-24 23:21:32,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 23:21:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 289 transitions. [2023-11-24 23:21:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-24 23:21:32,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:21:32,999 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:21:33,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-24 23:21:33,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 23:21:33,206 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-24 23:21:33,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:21:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1793604937, now seen corresponding path program 1 times [2023-11-24 23:21:33,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:21:33,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842197784] [2023-11-24 23:21:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:33,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:21:33,228 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:21:33,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963348364] [2023-11-24 23:21:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:21:33,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:21:33,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:21:33,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:21:33,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4051fd7-258f-480a-97f5-cd19cada2d5a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-24 23:21:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:21:33,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:21:33,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:21:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 23:21:33,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:21:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 23:21:33,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:21:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842197784] [2023-11-24 23:21:33,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:21:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963348364] [2023-11-24 23:21:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963348364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:21:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1338668074] [2023-11-24 23:21:33,550 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-24 23:21:33,551 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:21:33,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:21:33,552 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:21:33,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs