./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire --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 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:20:07,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:20:07,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:20:07,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:20:07,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:20:07,839 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:20:07,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:20:07,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:20:07,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:20:07,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:20:07,843 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:20:07,844 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:20:07,845 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:20:07,846 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:20:07,847 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:20:07,847 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:20:07,848 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:20:07,849 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:20:07,850 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:20:07,851 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:20:07,851 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:20:07,860 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:20:07,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:20:07,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:20:07,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:20:07,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:20:07,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:20:07,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:20:07,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:20:07,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:20:07,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:20:07,872 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:20:07,872 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:20:07,873 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:20:07,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:20:07,873 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:20:07,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:20:07,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:20:07,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:20:07,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:07,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:20:07,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:20:07,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:20:07,877 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:20:07,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:20:07,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:20:07,878 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:20:07,879 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:20:07,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:20:07,879 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_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2023-11-23 21:20:08,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:20:08,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:20:08,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:20:08,334 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:20:08,334 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:20:08,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c [2023-11-23 21:20:11,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:20:12,231 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:20:12,232 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c [2023-11-23 21:20:12,244 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/data/fd8712b34/9e0caa2aefc043a192986294cedeae26/FLAG88d13942b [2023-11-23 21:20:12,532 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/data/fd8712b34/9e0caa2aefc043a192986294cedeae26 [2023-11-23 21:20:12,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:20:12,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:20:12,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:12,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:20:12,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:20:12,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4daec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12, skipping insertion in model container [2023-11-23 21:20:12,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:20:12,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:12,870 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:20:12,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:20:12,914 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:20:12,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12 WrapperNode [2023-11-23 21:20:12,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:20:12,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:12,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:20:12,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:20:12,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,964 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2023-11-23 21:20:12,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:20:12,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:20:12,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:20:12,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:20:12,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:12,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:20:12,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:20:12,998 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:20:12,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:20:12,999 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (1/1) ... [2023-11-23 21:20:13,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:20:13,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:13,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:20:13,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:20:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:20:13,083 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:20:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:20:13,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:20:13,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:20:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:20:13,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:20:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:20:13,172 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:20:13,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:20:13,431 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:20:13,492 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:20:13,493 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:20:13,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:13 BoogieIcfgContainer [2023-11-23 21:20:13,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:20:13,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:20:13,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:20:13,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:20:13,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:20:12" (1/3) ... [2023-11-23 21:20:13,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c04a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:13, skipping insertion in model container [2023-11-23 21:20:13,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:20:12" (2/3) ... [2023-11-23 21:20:13,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c04a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:20:13, skipping insertion in model container [2023-11-23 21:20:13,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:20:13" (3/3) ... [2023-11-23 21:20:13,509 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound20.c [2023-11-23 21:20:13,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:20:13,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-23 21:20:13,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:20:13,599 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;@5e17cac2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:20:13,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-23 21:20:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 48 states have internal predecessors, (51), 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) [2023-11-23 21:20:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:20:13,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:13,616 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:13,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:13,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 885391590, now seen corresponding path program 1 times [2023-11-23 21:20:13,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896094748] [2023-11-23 21:20:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:13,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:13,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896094748] [2023-11-23 21:20:13,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:20:13,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578291795] [2023-11-23 21:20:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:13,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:13,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:13,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:13,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:20:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:13,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:20:13,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:13,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:13,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578291795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:13,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980935660] [2023-11-23 21:20:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:13,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:20:13,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:14,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:20:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:20:14,048 INFO L87 Difference]: Start difference. First operand has 55 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 48 states have internal predecessors, (51), 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:14,112 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2023-11-23 21:20:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:20:14,115 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-23 21:20:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:14,124 INFO L225 Difference]: With dead ends: 68 [2023-11-23 21:20:14,125 INFO L226 Difference]: Without dead ends: 52 [2023-11-23 21:20:14,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:20:14,134 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:14,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-23 21:20:14,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-23 21:20:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 46 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2023-11-23 21:20:14,191 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 10 [2023-11-23 21:20:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:14,192 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2023-11-23 21:20:14,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2023-11-23 21:20:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:20:14,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:14,196 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:14,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:14,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:20:14,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:14,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:14,414 INFO L85 PathProgramCache]: Analyzing trace with hash 885388443, now seen corresponding path program 1 times [2023-11-23 21:20:14,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:14,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014244023] [2023-11-23 21:20:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:14,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:14,434 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:14,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463805623] [2023-11-23 21:20:14,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:14,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:14,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:14,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:20:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:14,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:14,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:14,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:14,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014244023] [2023-11-23 21:20:14,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:14,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463805623] [2023-11-23 21:20:14,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463805623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:14,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:14,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160013507] [2023-11-23 21:20:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:14,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:14,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:14,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:14,546 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:14,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:14,688 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2023-11-23 21:20:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:14,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2023-11-23 21:20:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:14,690 INFO L225 Difference]: With dead ends: 92 [2023-11-23 21:20:14,691 INFO L226 Difference]: Without dead ends: 86 [2023-11-23 21:20:14,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:14,693 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:14,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-23 21:20:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2023-11-23 21:20:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 65 states have internal predecessors, (79), 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) [2023-11-23 21:20:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2023-11-23 21:20:14,722 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 10 [2023-11-23 21:20:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:14,723 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2023-11-23 21:20:14,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2023-11-23 21:20:14,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:20:14,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:14,724 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:14,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 21:20:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:14,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:14,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 454770653, now seen corresponding path program 1 times [2023-11-23 21:20:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:14,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582695171] [2023-11-23 21:20:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:14,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720743187] [2023-11-23 21:20:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:14,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:14,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:14,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:20:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:15,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:15,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:15,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:15,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582695171] [2023-11-23 21:20:15,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:15,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720743187] [2023-11-23 21:20:15,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720743187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:15,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:15,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082141975] [2023-11-23 21:20:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:15,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:15,117 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:15,259 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2023-11-23 21:20:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2023-11-23 21:20:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:15,264 INFO L225 Difference]: With dead ends: 75 [2023-11-23 21:20:15,264 INFO L226 Difference]: Without dead ends: 69 [2023-11-23 21:20:15,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:15,269 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:15,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 29 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-23 21:20:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-23 21:20:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 62 states have internal predecessors, (73), 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) [2023-11-23 21:20:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-11-23 21:20:15,287 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 12 [2023-11-23 21:20:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:15,287 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-11-23 21:20:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-11-23 21:20:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:20:15,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:15,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:15,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:15,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:15,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:15,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:15,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1212988407, now seen corresponding path program 1 times [2023-11-23 21:20:15,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:15,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945345589] [2023-11-23 21:20:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:15,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:15,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:15,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493174119] [2023-11-23 21:20:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:15,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:15,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:15,518 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:15,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:20:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:15,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:15,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:15,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:15,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945345589] [2023-11-23 21:20:15,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493174119] [2023-11-23 21:20:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493174119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431580876] [2023-11-23 21:20:15,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:15,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:15,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:15,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:15,605 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:15,702 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2023-11-23 21:20:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:15,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-23 21:20:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:15,706 INFO L225 Difference]: With dead ends: 115 [2023-11-23 21:20:15,706 INFO L226 Difference]: Without dead ends: 104 [2023-11-23 21:20:15,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:15,708 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:15,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 52 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-23 21:20:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2023-11-23 21:20:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4444444444444444) internal successors, (104), 86 states have internal predecessors, (104), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:20:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2023-11-23 21:20:15,729 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 13 [2023-11-23 21:20:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:15,730 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2023-11-23 21:20:15,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:15,730 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2023-11-23 21:20:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:20:15,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:15,731 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:15,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:15,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:15,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:15,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:15,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1052064993, now seen corresponding path program 1 times [2023-11-23 21:20:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813060839] [2023-11-23 21:20:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:15,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:15,962 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:15,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072087623] [2023-11-23 21:20:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:15,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:15,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:15,976 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:15,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:20:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:16,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:20:16,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:16,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:16,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813060839] [2023-11-23 21:20:16,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:16,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072087623] [2023-11-23 21:20:16,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072087623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:16,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:16,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260331926] [2023-11-23 21:20:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:16,249 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:16,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:16,422 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2023-11-23 21:20:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:16,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-23 21:20:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:16,430 INFO L225 Difference]: With dead ends: 103 [2023-11-23 21:20:16,430 INFO L226 Difference]: Without dead ends: 102 [2023-11-23 21:20:16,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:20:16,438 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 74 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:16,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 35 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-23 21:20:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2023-11-23 21:20:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 86 states have internal predecessors, (103), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:20:16,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2023-11-23 21:20:16,470 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 14 [2023-11-23 21:20:16,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:16,471 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2023-11-23 21:20:16,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2023-11-23 21:20:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:20:16,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:16,473 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:16,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:16,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:16,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:16,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1745723641, now seen corresponding path program 1 times [2023-11-23 21:20:16,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:16,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007607372] [2023-11-23 21:20:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:16,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:16,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785313029] [2023-11-23 21:20:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:16,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:16,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:16,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:16,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:20:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:16,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:20:16,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:16,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:16,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007607372] [2023-11-23 21:20:16,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785313029] [2023-11-23 21:20:16,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785313029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:16,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003800927] [2023-11-23 21:20:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:16,916 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:17,078 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2023-11-23 21:20:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:17,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-11-23 21:20:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:17,081 INFO L225 Difference]: With dead ends: 98 [2023-11-23 21:20:17,081 INFO L226 Difference]: Without dead ends: 97 [2023-11-23 21:20:17,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:20:17,085 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 64 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:17,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-23 21:20:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2023-11-23 21:20:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 86 states have internal predecessors, (102), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:20:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2023-11-23 21:20:17,123 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 15 [2023-11-23 21:20:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:17,123 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2023-11-23 21:20:17,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:20:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2023-11-23 21:20:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:20:17,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:17,126 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:17,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:17,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:17,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:17,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1837019302, now seen corresponding path program 1 times [2023-11-23 21:20:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:17,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160083150] [2023-11-23 21:20:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:17,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:17,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832762186] [2023-11-23 21:20:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:17,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:17,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:17,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:17,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:20:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:17,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:20:17,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:20:17,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:20:17,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:17,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160083150] [2023-11-23 21:20:17,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:17,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832762186] [2023-11-23 21:20:17,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832762186] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:17,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [283385681] [2023-11-23 21:20:17,669 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-23 21:20:17,671 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:17,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:17,683 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:17,684 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:18,623 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2023-11-23 21:20:18,646 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:18,716 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:20,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [283385681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:20,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:20:20,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 17 [2023-11-23 21:20:20,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358556193] [2023-11-23 21:20:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:20,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:20:20,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:20:20,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:20:20,110 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:20,769 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2023-11-23 21:20:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:20:20,770 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-11-23 21:20:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:20,771 INFO L225 Difference]: With dead ends: 103 [2023-11-23 21:20:20,771 INFO L226 Difference]: Without dead ends: 101 [2023-11-23 21:20:20,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:20:20,773 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:20,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 67 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:20:20,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-23 21:20:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-11-23 21:20:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.4) internal successors, (105), 89 states have internal predecessors, (105), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:20:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-11-23 21:20:20,793 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 25 [2023-11-23 21:20:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:20,794 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-11-23 21:20:20,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-11-23 21:20:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:20:20,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:20,796 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:20,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:21,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:21,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:21,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1836711462, now seen corresponding path program 1 times [2023-11-23 21:20:21,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:21,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282864143] [2023-11-23 21:20:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:21,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:21,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:21,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637630131] [2023-11-23 21:20:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:21,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:21,038 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:21,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:20:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:21,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:20:21,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:20:21,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:20:21,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:21,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282864143] [2023-11-23 21:20:21,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:21,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637630131] [2023-11-23 21:20:21,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637630131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [637178124] [2023-11-23 21:20:21,255 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-23 21:20:21,256 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:21,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:21,256 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:21,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:21,713 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2023-11-23 21:20:21,723 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:21,800 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [637178124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:23,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:20:23,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 17 [2023-11-23 21:20:23,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954919973] [2023-11-23 21:20:23,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:23,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:20:23,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:23,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:20:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:20:23,092 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:23,541 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2023-11-23 21:20:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:20:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2023-11-23 21:20:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:23,543 INFO L225 Difference]: With dead ends: 105 [2023-11-23 21:20:23,544 INFO L226 Difference]: Without dead ends: 103 [2023-11-23 21:20:23,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:20:23,545 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 134 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:23,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 42 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:20:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-23 21:20:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-23 21:20:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.379746835443038) internal successors, (109), 93 states have internal predecessors, (109), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:20:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-11-23 21:20:23,562 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 25 [2023-11-23 21:20:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:23,563 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-23 21:20:23,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-11-23 21:20:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:20:23,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:23,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:23,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:23,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:23,778 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:23,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash -412111191, now seen corresponding path program 1 times [2023-11-23 21:20:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:23,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141827545] [2023-11-23 21:20:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:23,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:23,792 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:23,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960539967] [2023-11-23 21:20:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:23,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:23,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:23,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:20:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:23,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:20:23,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:24,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:24,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:24,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141827545] [2023-11-23 21:20:24,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960539967] [2023-11-23 21:20:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960539967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [929150949] [2023-11-23 21:20:24,206 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:20:24,207 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:24,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:24,208 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:24,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:25,886 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-23 21:20:25,909 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:25,961 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:27,796 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2346#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= (+ 2147483649 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)) 0) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-23 21:20:27,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:27,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:20:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-23 21:20:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142800790] [2023-11-23 21:20:27,797 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:27,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:20:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:27,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:20:27,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2023-11-23 21:20:27,800 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:20:27,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:27,962 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2023-11-23 21:20:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:20:27,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-23 21:20:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:27,964 INFO L225 Difference]: With dead ends: 113 [2023-11-23 21:20:27,964 INFO L226 Difference]: Without dead ends: 111 [2023-11-23 21:20:27,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2023-11-23 21:20:27,966 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 60 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:27,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 55 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-23 21:20:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2023-11-23 21:20:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.3544303797468353) internal successors, (107), 91 states have internal predecessors, (107), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:20:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-11-23 21:20:27,979 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 28 [2023-11-23 21:20:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:27,980 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-11-23 21:20:27,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:20:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-11-23 21:20:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:20:27,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:27,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:28,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:28,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:28,194 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:28,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash 109455015, now seen corresponding path program 1 times [2023-11-23 21:20:28,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:28,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317688748] [2023-11-23 21:20:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:28,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:28,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96671324] [2023-11-23 21:20:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:28,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:28,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:28,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:28,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:20:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:28,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:20:28,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:28,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:28,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:28,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317688748] [2023-11-23 21:20:28,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96671324] [2023-11-23 21:20:28,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96671324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1885473152] [2023-11-23 21:20:28,703 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:20:28,703 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:28,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:28,704 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:28,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:29,899 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-23 21:20:29,924 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:29,964 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:32,055 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2738#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-23 21:20:32,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:32,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:20:32,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-23 21:20:32,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327683451] [2023-11-23 21:20:32,056 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:32,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:20:32,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:32,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:20:32,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2023-11-23 21:20:32,058 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:20:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:32,248 INFO L93 Difference]: Finished difference Result 162 states and 179 transitions. [2023-11-23 21:20:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:20:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-11-23 21:20:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:32,250 INFO L225 Difference]: With dead ends: 162 [2023-11-23 21:20:32,250 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 21:20:32,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2023-11-23 21:20:32,252 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 131 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:32,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 77 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 21:20:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 135. [2023-11-23 21:20:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 111 states have (on average 1.3783783783783783) internal successors, (153), 123 states have internal predecessors, (153), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:20:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 169 transitions. [2023-11-23 21:20:32,267 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 169 transitions. Word has length 29 [2023-11-23 21:20:32,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:32,268 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 169 transitions. [2023-11-23 21:20:32,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:20:32,268 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 169 transitions. [2023-11-23 21:20:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:20:32,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:32,269 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:20:32,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:32,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:20:32,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:32,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash 66873311, now seen corresponding path program 1 times [2023-11-23 21:20:32,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:32,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295642010] [2023-11-23 21:20:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:32,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913090786] [2023-11-23 21:20:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:32,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:32,494 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:32,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:20:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:32,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:20:32,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:32,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:32,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295642010] [2023-11-23 21:20:32,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913090786] [2023-11-23 21:20:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913090786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [435941002] [2023-11-23 21:20:32,745 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:20:32,745 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:32,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:32,746 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:32,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:33,997 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2023-11-23 21:20:34,012 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:34,067 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:35,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [435941002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:35,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:20:35,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [3] total 19 [2023-11-23 21:20:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615414459] [2023-11-23 21:20:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:35,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 21:20:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 21:20:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-23 21:20:35,409 INFO L87 Difference]: Start difference. First operand 135 states and 169 transitions. Second operand has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:37,143 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2023-11-23 21:20:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:20:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-11-23 21:20:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:37,145 INFO L225 Difference]: With dead ends: 147 [2023-11-23 21:20:37,145 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 21:20:37,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:37,147 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 252 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:37,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 51 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 21:20:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 21:20:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2023-11-23 21:20:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 107 states have (on average 1.3364485981308412) internal successors, (143), 119 states have internal predecessors, (143), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:20:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 159 transitions. [2023-11-23 21:20:37,166 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 159 transitions. Word has length 31 [2023-11-23 21:20:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:37,167 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 159 transitions. [2023-11-23 21:20:37,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 159 transitions. [2023-11-23 21:20:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-23 21:20:37,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:37,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:37,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:37,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:37,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:37,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 894223917, now seen corresponding path program 1 times [2023-11-23 21:20:37,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:37,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259243821] [2023-11-23 21:20:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:37,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:37,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963100310] [2023-11-23 21:20:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:37,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:37,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:37,407 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:37,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:20:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:37,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:20:37,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:20:37,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:20:37,770 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:37,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259243821] [2023-11-23 21:20:37,770 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:37,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963100310] [2023-11-23 21:20:37,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963100310] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:37,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515803745] [2023-11-23 21:20:37,773 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:20:37,773 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:37,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:37,773 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:37,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:38,848 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-23 21:20:38,864 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:38,902 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:40,916 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3772#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= (+ 2147483649 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y3~0#1|) 0) (<= 0 (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) 2147483648)) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-23 21:20:40,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:40,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:20:40,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-11-23 21:20:40,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384410587] [2023-11-23 21:20:40,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:40,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:20:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:20:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:20:40,921 INFO L87 Difference]: Start difference. First operand 131 states and 159 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:41,213 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2023-11-23 21:20:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:20:41,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-11-23 21:20:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:41,216 INFO L225 Difference]: With dead ends: 131 [2023-11-23 21:20:41,216 INFO L226 Difference]: Without dead ends: 128 [2023-11-23 21:20:41,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=176, Invalid=1014, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 21:20:41,218 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 112 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:41,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 27 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:20:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-23 21:20:41,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-23 21:20:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 107 states have (on average 1.2616822429906542) internal successors, (135), 116 states have internal predecessors, (135), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:20:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2023-11-23 21:20:41,238 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 32 [2023-11-23 21:20:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:41,239 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2023-11-23 21:20:41,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:20:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2023-11-23 21:20:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:20:41,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:41,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:41,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:41,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:41,458 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:41,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -159255839, now seen corresponding path program 1 times [2023-11-23 21:20:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304819917] [2023-11-23 21:20:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:41,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510257253] [2023-11-23 21:20:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:41,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:41,477 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:41,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:20:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:41,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:20:41,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:41,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:41,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:41,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304819917] [2023-11-23 21:20:41,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:41,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510257253] [2023-11-23 21:20:41,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510257253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:41,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:41,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:20:41,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576328575] [2023-11-23 21:20:41,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:41,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:20:41,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:41,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:20:41,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:41,598 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:20:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:41,693 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2023-11-23 21:20:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:20:41,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-11-23 21:20:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:41,696 INFO L225 Difference]: With dead ends: 130 [2023-11-23 21:20:41,696 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 21:20:41,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:20:41,697 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:41,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 21:20:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2023-11-23 21:20:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 107 states have (on average 1.233644859813084) internal successors, (132), 116 states have internal predecessors, (132), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:20:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2023-11-23 21:20:41,715 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 33 [2023-11-23 21:20:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:41,716 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2023-11-23 21:20:41,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:20:41,716 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2023-11-23 21:20:41,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:20:41,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:41,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:41,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:41,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:41,922 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:41,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:41,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1951137707, now seen corresponding path program 1 times [2023-11-23 21:20:41,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:41,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260102032] [2023-11-23 21:20:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:41,934 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:41,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [852644187] [2023-11-23 21:20:41,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:41,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:41,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:41,939 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:41,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 21:20:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:41,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:20:41,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:42,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:42,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:42,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260102032] [2023-11-23 21:20:42,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852644187] [2023-11-23 21:20:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852644187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1555397861] [2023-11-23 21:20:42,373 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:20:42,373 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:42,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:42,374 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:42,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:43,459 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-23 21:20:43,506 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:43,548 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:45,371 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4687#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 2147483648 (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y3~0#1|)) (<= (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) 2147483647) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-23 21:20:45,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:45,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:20:45,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-23 21:20:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111903536] [2023-11-23 21:20:45,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:20:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:20:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2023-11-23 21:20:45,375 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:20:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:46,154 INFO L93 Difference]: Finished difference Result 215 states and 250 transitions. [2023-11-23 21:20:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:20:46,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2023-11-23 21:20:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:46,157 INFO L225 Difference]: With dead ends: 215 [2023-11-23 21:20:46,157 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 21:20:46,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 21:20:46,160 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 103 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:46,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 57 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:20:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 21:20:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2023-11-23 21:20:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 118 states have (on average 1.194915254237288) internal successors, (141), 126 states have internal predecessors, (141), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 21:20:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 159 transitions. [2023-11-23 21:20:46,180 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 159 transitions. Word has length 33 [2023-11-23 21:20:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:46,181 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 159 transitions. [2023-11-23 21:20:46,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 21:20:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 159 transitions. [2023-11-23 21:20:46,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 21:20:46,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:46,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:46,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:46,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:46,383 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:46,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:46,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1479578058, now seen corresponding path program 1 times [2023-11-23 21:20:46,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:46,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592261044] [2023-11-23 21:20:46,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:46,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:46,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:46,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261469349] [2023-11-23 21:20:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:46,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:46,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:46,398 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:46,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 21:20:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:46,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:46,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:20:46,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:20:46,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:46,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592261044] [2023-11-23 21:20:46,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:46,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261469349] [2023-11-23 21:20:46,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261469349] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:46,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1935216687] [2023-11-23 21:20:46,606 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:20:46,606 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:46,606 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:46,607 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:46,607 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:47,551 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2023-11-23 21:20:47,560 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:47,587 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:48,960 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5353#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= 2147483647 |ULTIMATE.start_main_~y2~0#1|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y1~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2023-11-23 21:20:48,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:48,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:20:48,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-23 21:20:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183699556] [2023-11-23 21:20:48,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:48,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:20:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:48,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:20:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:20:48,963 INFO L87 Difference]: Start difference. First operand 139 states and 159 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:20:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:49,112 INFO L93 Difference]: Finished difference Result 330 states and 385 transitions. [2023-11-23 21:20:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:20:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2023-11-23 21:20:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:49,116 INFO L225 Difference]: With dead ends: 330 [2023-11-23 21:20:49,116 INFO L226 Difference]: Without dead ends: 328 [2023-11-23 21:20:49,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:20:49,118 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:49,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 96 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-23 21:20:49,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 275. [2023-11-23 21:20:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 246 states have (on average 1.1951219512195121) internal successors, (294), 253 states have internal predecessors, (294), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:20:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 330 transitions. [2023-11-23 21:20:49,161 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 330 transitions. Word has length 39 [2023-11-23 21:20:49,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:49,162 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 330 transitions. [2023-11-23 21:20:49,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:20:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 330 transitions. [2023-11-23 21:20:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 21:20:49,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:49,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:49,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:49,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 21:20:49,386 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:49,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:49,387 INFO L85 PathProgramCache]: Analyzing trace with hash 287486975, now seen corresponding path program 1 times [2023-11-23 21:20:49,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:49,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174607868] [2023-11-23 21:20:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:49,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:49,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466355985] [2023-11-23 21:20:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:49,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:49,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:49,398 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:49,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 21:20:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:49,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:20:49,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:20:49,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:20:49,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174607868] [2023-11-23 21:20:49,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466355985] [2023-11-23 21:20:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466355985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:20:49,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:20:49,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:20:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429582358] [2023-11-23 21:20:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:20:49,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:20:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:49,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:20:49,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:49,479 INFO L87 Difference]: Start difference. First operand 275 states and 330 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:20:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:49,540 INFO L93 Difference]: Finished difference Result 275 states and 330 transitions. [2023-11-23 21:20:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:20:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-11-23 21:20:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:49,544 INFO L225 Difference]: With dead ends: 275 [2023-11-23 21:20:49,544 INFO L226 Difference]: Without dead ends: 273 [2023-11-23 21:20:49,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:20:49,546 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 14 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:49,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 71 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:20:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-23 21:20:49,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-23 21:20:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 246 states have (on average 1.1544715447154472) internal successors, (284), 251 states have internal predecessors, (284), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:20:49,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 320 transitions. [2023-11-23 21:20:49,583 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 320 transitions. Word has length 44 [2023-11-23 21:20:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:49,583 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 320 transitions. [2023-11-23 21:20:49,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:20:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 320 transitions. [2023-11-23 21:20:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 21:20:49,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:49,585 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:49,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:49,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 21:20:49,807 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:49,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:49,807 INFO L85 PathProgramCache]: Analyzing trace with hash -640162343, now seen corresponding path program 2 times [2023-11-23 21:20:49,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:49,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797930829] [2023-11-23 21:20:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:49,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:49,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:49,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491945618] [2023-11-23 21:20:49,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:20:49,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:49,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:49,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:49,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 21:20:49,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:20:49,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:49,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 21:20:49,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:20:50,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:50,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:50,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797930829] [2023-11-23 21:20:50,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:50,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491945618] [2023-11-23 21:20:50,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491945618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:20:50,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767550845] [2023-11-23 21:20:50,398 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:20:50,398 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:50,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:50,399 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:50,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:51,493 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-23 21:20:51,504 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:51,529 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:53,711 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6992#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= |ULTIMATE.start_main_~y1~0#1| 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-23 21:20:53,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:53,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:20:53,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-23 21:20:53,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595328528] [2023-11-23 21:20:53,712 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:53,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:20:53,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:53,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:20:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 21:20:53,715 INFO L87 Difference]: Start difference. First operand 273 states and 320 transitions. Second operand has 11 states, 8 states have (on average 4.875) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:20:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:54,231 INFO L93 Difference]: Finished difference Result 364 states and 430 transitions. [2023-11-23 21:20:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:20:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 4.875) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2023-11-23 21:20:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:54,235 INFO L225 Difference]: With dead ends: 364 [2023-11-23 21:20:54,235 INFO L226 Difference]: Without dead ends: 361 [2023-11-23 21:20:54,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=222, Invalid=1338, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 21:20:54,238 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 102 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:54,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 133 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:20:54,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-23 21:20:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 273. [2023-11-23 21:20:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 246 states have (on average 1.1544715447154472) internal successors, (284), 251 states have internal predecessors, (284), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:20:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 320 transitions. [2023-11-23 21:20:54,284 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 320 transitions. Word has length 47 [2023-11-23 21:20:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:54,285 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 320 transitions. [2023-11-23 21:20:54,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 4.875) internal successors, (39), 10 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:20:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 320 transitions. [2023-11-23 21:20:54,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:20:54,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:54,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:54,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 21:20:54,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 21:20:54,487 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:54,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash -431319103, now seen corresponding path program 1 times [2023-11-23 21:20:54,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:54,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826540873] [2023-11-23 21:20:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:54,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:54,498 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:54,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260853693] [2023-11-23 21:20:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:54,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:54,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:54,500 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:54,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 21:20:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:20:54,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:20:54,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:20:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:20:54,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:20:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:20:54,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:20:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826540873] [2023-11-23 21:20:54,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:20:54,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260853693] [2023-11-23 21:20:54,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260853693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:20:54,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [564143789] [2023-11-23 21:20:54,836 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-23 21:20:54,837 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:20:54,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:20:54,838 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:20:54,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:20:56,082 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 45 for LOIs [2023-11-23 21:20:56,104 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:20:56,143 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:20:59,086 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8135#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (<= |ULTIMATE.start_main_~y2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y1~0#1|) (<= 0 |ULTIMATE.start_main_~y2~0#1|) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)))' at error location [2023-11-23 21:20:59,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:20:59,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:20:59,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-23 21:20:59,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110753128] [2023-11-23 21:20:59,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:20:59,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:20:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:20:59,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:20:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2023-11-23 21:20:59,089 INFO L87 Difference]: Start difference. First operand 273 states and 320 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:20:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:20:59,318 INFO L93 Difference]: Finished difference Result 540 states and 640 transitions. [2023-11-23 21:20:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:20:59,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 65 [2023-11-23 21:20:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:20:59,325 INFO L225 Difference]: With dead ends: 540 [2023-11-23 21:20:59,326 INFO L226 Difference]: Without dead ends: 447 [2023-11-23 21:20:59,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 154 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-11-23 21:20:59,328 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 70 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:20:59,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 112 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:20:59,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-23 21:20:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 307. [2023-11-23 21:20:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 278 states have (on average 1.143884892086331) internal successors, (318), 283 states have internal predecessors, (318), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 21:20:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 358 transitions. [2023-11-23 21:20:59,376 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 358 transitions. Word has length 65 [2023-11-23 21:20:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:20:59,376 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 358 transitions. [2023-11-23 21:20:59,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-23 21:20:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 358 transitions. [2023-11-23 21:20:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:20:59,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:20:59,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:20:59,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-23 21:20:59,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 21:20:59,594 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-23 21:20:59,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:20:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash 622787723, now seen corresponding path program 3 times [2023-11-23 21:20:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:20:59,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522013059] [2023-11-23 21:20:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:20:59,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:20:59,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:20:59,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801031666] [2023-11-23 21:20:59,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 21:20:59,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:20:59,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:20:59,618 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:20:59,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b540133b-41d1-43f5-aebd-5f83038ffca8/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 21:20:59,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 21:20:59,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:20:59,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:20:59,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:21:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:21:00,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:21:00,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:21:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522013059] [2023-11-23 21:21:00,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:21:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801031666] [2023-11-23 21:21:00,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801031666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:21:00,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014146122] [2023-11-23 21:21:00,483 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-23 21:21:00,484 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:21:00,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:21:00,484 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:21:00,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:21:01,375 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2023-11-23 21:21:01,391 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2023-11-23 21:21:01,444 INFO L180 IcfgInterpreter]: Interpretation finished