./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/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_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/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_e9648498-8d7c-4e10-b57a-297c9a7deff6/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 56ae0381e0fc321a4bef875cc97d6a437c7ca54ffeb3bb010be2e47fa76c5a5f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:03,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:03,913 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:08:03,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:03,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:03,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:03,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:03,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:03,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:03,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:03,982 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:03,984 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:03,984 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:03,986 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:03,987 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:03,987 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:03,988 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:03,988 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:03,989 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:03,989 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:03,990 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:03,991 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:03,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:03,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:03,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:03,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:03,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:03,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:03,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:03,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:03,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:03,997 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:08:03,997 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:08:03,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:03,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:03,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:03,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:03,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:03,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:04,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:04,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:04,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:04,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:04,002 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:04,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:04,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:04,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:04,003 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:04,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:04,004 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_e9648498-8d7c-4e10-b57a-297c9a7deff6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ae0381e0fc321a4bef875cc97d6a437c7ca54ffeb3bb010be2e47fa76c5a5f [2023-11-23 21:08:04,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:04,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:04,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:04,380 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:04,381 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:04,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2023-11-23 21:08:07,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:07,980 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:07,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2023-11-23 21:08:07,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/data/9a128131c/209783114c73408b81f4a26673e031dd/FLAG12418753e [2023-11-23 21:08:08,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/data/9a128131c/209783114c73408b81f4a26673e031dd [2023-11-23 21:08:08,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:08,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:08,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:08,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:08,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:08,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62553fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08, skipping insertion in model container [2023-11-23 21:08:08,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:08,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:08,303 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:08,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:08,338 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:08,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08 WrapperNode [2023-11-23 21:08:08,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:08,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:08,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:08,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:08,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,383 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2023-11-23 21:08:08,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:08,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:08,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:08,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:08,394 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:08,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:08,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:08,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:08,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (1/1) ... [2023-11-23 21:08:08,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:08,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:08,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:08,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:08,502 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:08,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:08,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:08,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:08:08,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:08:08,584 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:08,589 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:08,868 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:08,904 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:08,904 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:08:08,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:08 BoogieIcfgContainer [2023-11-23 21:08:08,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:08,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:08,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:08,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:08,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:08" (1/3) ... [2023-11-23 21:08:08,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccc1c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:08, skipping insertion in model container [2023-11-23 21:08:08,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:08" (2/3) ... [2023-11-23 21:08:08,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccc1c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:08, skipping insertion in model container [2023-11-23 21:08:08,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:08" (3/3) ... [2023-11-23 21:08:08,915 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c [2023-11-23 21:08:08,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:08,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-23 21:08:08,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:08,985 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;@73b116d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:08,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-23 21:08:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 30 states have (on average 1.8) internal successors, (54), 52 states have internal predecessors, (54), 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 21:08:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:08:09,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:09,003 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:09,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:09,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1964114150, now seen corresponding path program 1 times [2023-11-23 21:08:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:09,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653424561] [2023-11-23 21:08:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:09,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:09,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653424561] [2023-11-23 21:08:09,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 21:08:09,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058193740] [2023-11-23 21:08:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:09,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:09,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:09,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:09,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:08:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:09,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:08:09,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:09,310 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 21:08:09,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058193740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:09,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:09,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:09,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213764251] [2023-11-23 21:08:09,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:09,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:08:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:08:09,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:08:09,366 INFO L87 Difference]: Start difference. First operand has 59 states, 30 states have (on average 1.8) internal successors, (54), 52 states have internal predecessors, (54), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 21:08:09,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:09,433 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2023-11-23 21:08:09,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:08:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 11 [2023-11-23 21:08:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:09,445 INFO L225 Difference]: With dead ends: 76 [2023-11-23 21:08:09,446 INFO L226 Difference]: Without dead ends: 56 [2023-11-23 21:08:09,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 21:08:09,456 INFO L413 NwaCegarLoop]: 57 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, 57 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 21:08:09,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:09,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-23 21:08:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-23 21:08:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 50 states have internal predecessors, (51), 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 21:08:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-11-23 21:08:09,517 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 11 [2023-11-23 21:08:09,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:09,519 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-11-23 21:08:09,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 21:08:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-11-23 21:08:09,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:08:09,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:09,525 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:09,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:08:09,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 21:08:09,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:09,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1964117229, now seen corresponding path program 1 times [2023-11-23 21:08:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:09,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570918757] [2023-11-23 21:08:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:09,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:09,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217044698] [2023-11-23 21:08:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:09,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:09,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:09,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:08:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:09,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:08:09,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:09,879 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 21:08:09,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:09,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:09,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570918757] [2023-11-23 21:08:09,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:09,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217044698] [2023-11-23 21:08:09,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217044698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:09,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:09,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681981916] [2023-11-23 21:08:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:09,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:09,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:09,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:09,885 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 21:08:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:10,028 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2023-11-23 21:08:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:10,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 11 [2023-11-23 21:08:10,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:10,030 INFO L225 Difference]: With dead ends: 91 [2023-11-23 21:08:10,030 INFO L226 Difference]: Without dead ends: 81 [2023-11-23 21:08:10,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 21:08:10,032 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:10,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 54 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-23 21:08:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2023-11-23 21:08:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 68 states have internal predecessors, (76), 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 21:08:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2023-11-23 21:08:10,046 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 11 [2023-11-23 21:08:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:10,049 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2023-11-23 21:08:10,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 21:08:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2023-11-23 21:08:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:08:10,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:10,050 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:10,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:10,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:10,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1377878569, now seen corresponding path program 1 times [2023-11-23 21:08:10,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:10,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550847460] [2023-11-23 21:08:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:10,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:10,286 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:10,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731316712] [2023-11-23 21:08:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:10,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:10,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:10,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:08:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:10,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:08:10,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:10,458 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 21:08:10,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:10,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550847460] [2023-11-23 21:08:10,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731316712] [2023-11-23 21:08:10,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731316712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:10,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:10,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:10,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477049636] [2023-11-23 21:08:10,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:10,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:10,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:10,464 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 21:08:10,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:10,666 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2023-11-23 21:08:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:10,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 21:08:10,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:10,669 INFO L225 Difference]: With dead ends: 81 [2023-11-23 21:08:10,669 INFO L226 Difference]: Without dead ends: 79 [2023-11-23 21:08:10,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 21:08:10,671 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:10,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 52 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:08:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-23 21:08:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2023-11-23 21:08:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.574468085106383) internal successors, (74), 68 states have internal predecessors, (74), 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 21:08:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2023-11-23 21:08:10,682 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 15 [2023-11-23 21:08:10,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:10,686 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2023-11-23 21:08:10,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 21:08:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2023-11-23 21:08:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:08:10,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:10,689 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:10,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 21:08:10,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:10,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:10,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash 235437378, now seen corresponding path program 1 times [2023-11-23 21:08:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713174529] [2023-11-23 21:08:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:10,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:10,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:10,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023578981] [2023-11-23 21:08:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:10,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:10,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:10,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:08:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:10,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:08:10,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:11,110 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 21:08:11,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:11,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713174529] [2023-11-23 21:08:11,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023578981] [2023-11-23 21:08:11,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023578981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:11,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643098368] [2023-11-23 21:08:11,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:11,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:11,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:11,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:11,114 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:08:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:11,462 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2023-11-23 21:08:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:11,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-23 21:08:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:11,463 INFO L225 Difference]: With dead ends: 75 [2023-11-23 21:08:11,464 INFO L226 Difference]: Without dead ends: 66 [2023-11-23 21:08:11,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 21:08:11,465 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:11,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 35 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-23 21:08:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-23 21:08:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 59 states have internal predecessors, (63), 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 21:08:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2023-11-23 21:08:11,482 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 16 [2023-11-23 21:08:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:11,482 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2023-11-23 21:08:11,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:08:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2023-11-23 21:08:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:08:11,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:11,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:11,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:11,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:11,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:11,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash -194865388, now seen corresponding path program 1 times [2023-11-23 21:08:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018308958] [2023-11-23 21:08:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:11,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:11,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025045478] [2023-11-23 21:08:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:11,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:11,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:11,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:08:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:11,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:08:11,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:11,809 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 21:08:11,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:11,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018308958] [2023-11-23 21:08:11,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:11,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025045478] [2023-11-23 21:08:11,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025045478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:11,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:11,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:11,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146293717] [2023-11-23 21:08:11,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:11,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:11,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:11,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:11,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:11,812 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (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 21:08:11,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:11,831 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-11-23 21:08:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:11,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (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 23 [2023-11-23 21:08:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:11,833 INFO L225 Difference]: With dead ends: 66 [2023-11-23 21:08:11,833 INFO L226 Difference]: Without dead ends: 65 [2023-11-23 21:08:11,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 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 21:08:11,835 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:11,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 45 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-23 21:08:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-23 21:08:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.297872340425532) internal successors, (61), 58 states have internal predecessors, (61), 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 21:08:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2023-11-23 21:08:11,846 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 23 [2023-11-23 21:08:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:11,846 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2023-11-23 21:08:11,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (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 21:08:11,846 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2023-11-23 21:08:11,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:08:11,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:11,850 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:11,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:12,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:12,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:12,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1745859661, now seen corresponding path program 1 times [2023-11-23 21:08:12,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:12,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123848235] [2023-11-23 21:08:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:12,080 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:12,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222797539] [2023-11-23 21:08:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:12,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:12,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:12,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:08:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:12,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:08:12,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:12,166 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 21:08:12,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:12,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:12,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123848235] [2023-11-23 21:08:12,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:12,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222797539] [2023-11-23 21:08:12,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222797539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:12,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:12,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:08:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306018974] [2023-11-23 21:08:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:12,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:08:12,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:08:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:08:12,171 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 21:08:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:12,200 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2023-11-23 21:08:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:08:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 24 [2023-11-23 21:08:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:12,204 INFO L225 Difference]: With dead ends: 74 [2023-11-23 21:08:12,204 INFO L226 Difference]: Without dead ends: 73 [2023-11-23 21:08:12,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 21:08:12,208 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:12,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 78 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:08:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-23 21:08:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2023-11-23 21:08:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 58 states have internal predecessors, (60), 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 21:08:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2023-11-23 21:08:12,228 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 24 [2023-11-23 21:08:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:12,229 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2023-11-23 21:08:12,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 21:08:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2023-11-23 21:08:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:08:12,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:12,230 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 21:08:12,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:12,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 21:08:12,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:12,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1712884715, now seen corresponding path program 1 times [2023-11-23 21:08:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:12,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955283569] [2023-11-23 21:08:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:12,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:12,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448113560] [2023-11-23 21:08:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:12,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:12,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:12,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:08:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:12,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:08:12,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:14,691 WARN L876 $PredicateComparison]: unable to prove that (or (< 0 (+ |c_ULTIMATE.start_main_~x~0#1| 9223372034707292161)) (exists ((v_z_1 Int)) (and (<= v_z_1 4294967295) (exists ((|v_ULTIMATE.start_main_~x~0#1_53| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~x~0#1_53| v_z_1))) (and (<= |v_ULTIMATE.start_main_~x~0#1_53| (+ .cse0 9223372036854775808)) (<= .cse0 (+ |v_ULTIMATE.start_main_~x~0#1_53| |c_ULTIMATE.start_main_~x~0#1|))))) (<= 1 v_z_1)))) is different from true [2023-11-23 21:08:14,692 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 21:08:14,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:14,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:14,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955283569] [2023-11-23 21:08:14,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:14,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448113560] [2023-11-23 21:08:14,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448113560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:14,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:14,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:14,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092708480] [2023-11-23 21:08:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:14,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:14,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-23 21:08:14,699 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:08:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:15,321 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2023-11-23 21:08:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:15,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2023-11-23 21:08:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:15,328 INFO L225 Difference]: With dead ends: 65 [2023-11-23 21:08:15,328 INFO L226 Difference]: Without dead ends: 64 [2023-11-23 21:08:15,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-23 21:08:15,329 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:15,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 67 Unchecked, 0.6s Time] [2023-11-23 21:08:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-23 21:08:15,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-23 21:08:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 57 states have internal predecessors, (59), 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 21:08:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2023-11-23 21:08:15,338 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 25 [2023-11-23 21:08:15,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:15,338 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2023-11-23 21:08:15,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:08:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2023-11-23 21:08:15,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:08:15,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:15,340 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:15,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:15,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:15,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:15,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1559818707, now seen corresponding path program 1 times [2023-11-23 21:08:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:15,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246621497] [2023-11-23 21:08:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:15,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:15,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:15,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846523130] [2023-11-23 21:08:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:15,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:15,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:15,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:15,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:08:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:15,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:08:15,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:15,679 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 21:08:15,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:15,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:15,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246621497] [2023-11-23 21:08:15,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846523130] [2023-11-23 21:08:15,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846523130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:15,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:15,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096998927] [2023-11-23 21:08:15,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:15,696 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (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 21:08:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:15,861 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2023-11-23 21:08:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (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 26 [2023-11-23 21:08:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:15,863 INFO L225 Difference]: With dead ends: 71 [2023-11-23 21:08:15,863 INFO L226 Difference]: Without dead ends: 70 [2023-11-23 21:08:15,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:15,864 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:15,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 56 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:08:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-23 21:08:15,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2023-11-23 21:08:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 59 states have internal predecessors, (61), 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 21:08:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2023-11-23 21:08:15,885 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 26 [2023-11-23 21:08:15,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:15,885 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2023-11-23 21:08:15,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (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 21:08:15,886 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2023-11-23 21:08:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:08:15,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:15,888 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:15,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 21:08:16,102 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:16,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1109739757, now seen corresponding path program 1 times [2023-11-23 21:08:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:16,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111056005] [2023-11-23 21:08:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:16,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:16,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231874463] [2023-11-23 21:08:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:16,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:16,116 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:16,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:08:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:16,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:08:16,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:16,299 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 21:08:16,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:16,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:16,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111056005] [2023-11-23 21:08:16,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:16,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231874463] [2023-11-23 21:08:16,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231874463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:16,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446977334] [2023-11-23 21:08:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:16,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:16,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:16,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:16,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:16,302 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (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 21:08:16,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:16,570 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2023-11-23 21:08:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (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 27 [2023-11-23 21:08:16,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:16,571 INFO L225 Difference]: With dead ends: 73 [2023-11-23 21:08:16,572 INFO L226 Difference]: Without dead ends: 72 [2023-11-23 21:08:16,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:16,573 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:16,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:08:16,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-23 21:08:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2023-11-23 21:08:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.24) internal successors, (62), 60 states have internal predecessors, (62), 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 21:08:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2023-11-23 21:08:16,581 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 27 [2023-11-23 21:08:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:16,581 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2023-11-23 21:08:16,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (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 21:08:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2023-11-23 21:08:16,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:08:16,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:16,583 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:16,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 21:08:16,798 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:16,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash 42194197, now seen corresponding path program 1 times [2023-11-23 21:08:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:16,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637492493] [2023-11-23 21:08:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:16,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:16,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:16,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133555174] [2023-11-23 21:08:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:16,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:16,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:16,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:16,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:08:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:16,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:08:16,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:16,946 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 21:08:16,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:08:16,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637492493] [2023-11-23 21:08:16,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:16,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133555174] [2023-11-23 21:08:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133555174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:16,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:08:16,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:08:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973598142] [2023-11-23 21:08:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:08:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:08:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:16,949 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (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 21:08:18,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-23 21:08:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:19,051 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2023-11-23 21:08:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:08:19,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (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 21:08:19,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:19,052 INFO L225 Difference]: With dead ends: 67 [2023-11-23 21:08:19,053 INFO L226 Difference]: Without dead ends: 60 [2023-11-23 21:08:19,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:08:19,054 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:19,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 39 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:08:19,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-23 21:08:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-23 21:08:19,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 53 states have internal predecessors, (54), 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 21:08:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2023-11-23 21:08:19,060 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 28 [2023-11-23 21:08:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:19,061 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2023-11-23 21:08:19,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (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 21:08:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2023-11-23 21:08:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:08:19,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:19,062 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:19,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:19,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:08:19,282 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:19,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash -719432487, now seen corresponding path program 1 times [2023-11-23 21:08:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035063189] [2023-11-23 21:08:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:19,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:19,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609509899] [2023-11-23 21:08:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:19,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:19,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:19,296 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:19,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:08:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:19,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 21:08:19,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:19,485 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 21:08:19,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:23,577 WARN L876 $PredicateComparison]: unable to prove that (< (let ((.cse0 (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296))) (* .cse0 .cse0)) 9223372036854775808) is different from true [2023-11-23 21:08:27,702 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 21:08:27,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:27,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035063189] [2023-11-23 21:08:27,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:27,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609509899] [2023-11-23 21:08:27,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609509899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:27,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602514115] [2023-11-23 21:08:27,730 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-23 21:08:27,731 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:08:27,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:08:27,743 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:08:27,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:08:28,462 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2023-11-23 21:08:28,480 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-11-23 21:08:28,487 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:08:29,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1602514115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:08:29,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:08:29,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4, 4] total 17 [2023-11-23 21:08:29,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963316160] [2023-11-23 21:08:29,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:08:29,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 21:08:29,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 21:08:29,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=205, Unknown=1, NotChecked=30, Total=306 [2023-11-23 21:08:29,472 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 13 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 21:08:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:30,202 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2023-11-23 21:08:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:08:30,203 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 30 [2023-11-23 21:08:30,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:30,204 INFO L225 Difference]: With dead ends: 65 [2023-11-23 21:08:30,204 INFO L226 Difference]: Without dead ends: 64 [2023-11-23 21:08:30,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=81, Invalid=264, Unknown=1, NotChecked=34, Total=380 [2023-11-23 21:08:30,206 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:30,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 35 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:08:30,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-23 21:08:30,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-11-23 21:08:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 56 states have internal predecessors, (57), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:08:30,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2023-11-23 21:08:30,224 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 30 [2023-11-23 21:08:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:30,228 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2023-11-23 21:08:30,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 21:08:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2023-11-23 21:08:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:08:30,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:30,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:30,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:30,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:30,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:30,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:30,455 INFO L85 PathProgramCache]: Analyzing trace with hash -726368426, now seen corresponding path program 1 times [2023-11-23 21:08:30,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:30,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791320988] [2023-11-23 21:08:30,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:30,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:30,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558515253] [2023-11-23 21:08:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:30,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:30,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:30,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:30,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:08:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:30,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:08:30,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:08:30,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:31,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:31,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791320988] [2023-11-23 21:08:31,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:31,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558515253] [2023-11-23 21:08:31,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558515253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:31,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [569674077] [2023-11-23 21:08:31,149 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-23 21:08:31,149 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:08:31,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:08:31,150 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:08:31,150 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:08:36,112 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2023-11-23 21:08:36,128 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-11-23 21:08:36,132 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:08:39,444 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2727#(and (<= 1 |#StackHeapBarrier|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| (mod |ULTIMATE.start_main_~z~0#1| 4294967296))) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 9223372036854775807))' at error location [2023-11-23 21:08:39,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:08:39,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:08:39,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-23 21:08:39,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013237389] [2023-11-23 21:08:39,445 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 21:08:39,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:08:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:08:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:08:39,448 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 6 states, 4 states have (on average 6.75) internal successors, (27), 6 states have internal predecessors, (27), 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 21:08:39,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:39,976 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2023-11-23 21:08:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:08:39,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 6 states have internal predecessors, (27), 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 33 [2023-11-23 21:08:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:39,978 INFO L225 Difference]: With dead ends: 90 [2023-11-23 21:08:39,979 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 21:08:39,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:08:39,981 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 73 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:39,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 44 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:08:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 21:08:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2023-11-23 21:08:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 74 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 21:08:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2023-11-23 21:08:39,997 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 33 [2023-11-23 21:08:39,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:39,997 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2023-11-23 21:08:39,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 6 states have internal predecessors, (27), 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 21:08:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2023-11-23 21:08:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 21:08:39,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:39,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:40,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:40,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:40,218 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:40,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:40,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1042584675, now seen corresponding path program 1 times [2023-11-23 21:08:40,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:40,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803495694] [2023-11-23 21:08:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:40,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:40,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:40,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604886435] [2023-11-23 21:08:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:40,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:40,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:40,253 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:40,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:08:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:40,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:08:40,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:08:40,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:08:41,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803495694] [2023-11-23 21:08:41,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604886435] [2023-11-23 21:08:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604886435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1105973856] [2023-11-23 21:08:41,150 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-23 21:08:41,150 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:08:41,150 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:08:41,151 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:08:41,151 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:08:44,295 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2023-11-23 21:08:44,307 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-11-23 21:08:44,313 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:08:48,723 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3151#(and (<= (+ (* |ULTIMATE.start_main_~x~0#1| (mod |ULTIMATE.start_main_~z~0#1| 4294967296)) 9223372036854775809) |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ (* |ULTIMATE.start_main_~x~0#1| (mod |ULTIMATE.start_main_~z~0#1| 4294967296)) 9223372036854775808)) (<= |ULTIMATE.start_main_~c~0#1| 9223372036854775807))' at error location [2023-11-23 21:08:48,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:08:48,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:08:48,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2023-11-23 21:08:48,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741275854] [2023-11-23 21:08:48,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:08:48,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:08:48,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:08:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:08:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2023-11-23 21:08:48,728 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-23 21:08:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:08:51,957 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2023-11-23 21:08:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:08:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 34 [2023-11-23 21:08:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:08:51,959 INFO L225 Difference]: With dead ends: 128 [2023-11-23 21:08:51,959 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 21:08:51,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 21:08:51,961 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 161 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:08:51,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 70 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 21:08:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 21:08:51,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2023-11-23 21:08:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 98 states have internal predecessors, (112), 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 21:08:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2023-11-23 21:08:51,978 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 34 [2023-11-23 21:08:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:08:51,978 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2023-11-23 21:08:51,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-23 21:08:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2023-11-23 21:08:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:08:51,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:51,980 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, 1, 1, 1, 1] [2023-11-23 21:08:52,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:08:52,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 21:08:52,198 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-23 21:08:52,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:52,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1196491009, now seen corresponding path program 1 times [2023-11-23 21:08:52,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:52,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90920215] [2023-11-23 21:08:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:52,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:52,215 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223361538] [2023-11-23 21:08:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:52,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:52,223 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:52,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9648498-8d7c-4e10-b57a-297c9a7deff6/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 21:08:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:52,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:08:52,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:08:52,498 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:08:52,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90920215] [2023-11-23 21:08:52,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223361538] [2023-11-23 21:08:52,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223361538] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:08:52,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1185326296] [2023-11-23 21:08:52,697 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-23 21:08:52,697 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:08:52,698 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:08:52,698 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:08:52,698 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:08:55,420 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 29 for LOIs [2023-11-23 21:08:55,432 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2023-11-23 21:08:55,435 INFO L180 IcfgInterpreter]: Interpretation finished