./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh --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 d03c67e233c08f2056b22cded14e60e5b8002325e3ed3bc9a6e35392b69429b7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:08:38,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:08:39,004 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 13:08:39,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:08:39,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:08:39,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:08:39,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:08:39,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:08:39,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:08:39,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:08:39,034 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:08:39,035 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:08:39,035 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:08:39,036 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:08:39,036 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:08:39,037 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:08:39,038 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:08:39,038 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:08:39,039 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:08:39,039 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:08:39,040 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:08:39,041 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:08:39,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:08:39,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:08:39,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:08:39,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:08:39,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:08:39,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:08:39,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:08:39,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:08:39,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:08:39,046 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 13:08:39,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:08:39,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:08:39,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:08:39,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:08:39,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:08:39,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:08:39,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:08:39,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:08:39,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:08:39,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:08:39,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:08:39,049 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:08:39,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:08:39,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:08:39,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:08:39,050 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:08:39,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:08:39,050 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_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d03c67e233c08f2056b22cded14e60e5b8002325e3ed3bc9a6e35392b69429b7 [2023-12-02 13:08:39,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:08:39,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:08:39,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:08:39,279 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:08:39,279 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:08:39,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2023-12-02 13:08:42,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:08:42,191 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:08:42,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2023-12-02 13:08:42,199 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/data/25a0406ed/89a7a1dd9a524fda88053982ddcdb36a/FLAGfe7dde0db [2023-12-02 13:08:42,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/data/25a0406ed/89a7a1dd9a524fda88053982ddcdb36a [2023-12-02 13:08:42,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:08:42,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:08:42,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:08:42,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:08:42,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:08:42,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8cf2208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42, skipping insertion in model container [2023-12-02 13:08:42,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,249 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:08:42,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:08:42,425 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:08:42,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:08:42,461 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:08:42,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42 WrapperNode [2023-12-02 13:08:42,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:08:42,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:08:42,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:08:42,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:08:42,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,501 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2023-12-02 13:08:42,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:08:42,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:08:42,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:08:42,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:08:42,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:08:42,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:08:42,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:08:42,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:08:42,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (1/1) ... [2023-12-02 13:08:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:08:42,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:42,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:08:42,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:08:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:08:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:08:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:08:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:08:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:08:42,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:08:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:08:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:08:42,665 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:08:42,667 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:08:42,899 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:08:42,930 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:08:42,930 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:08:42,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:42 BoogieIcfgContainer [2023-12-02 13:08:42,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:08:42,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:08:42,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:08:42,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:08:42,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:08:42" (1/3) ... [2023-12-02 13:08:42,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdf6026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:42, skipping insertion in model container [2023-12-02 13:08:42,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:42" (2/3) ... [2023-12-02 13:08:42,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdf6026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:42, skipping insertion in model container [2023-12-02 13:08:42,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:42" (3/3) ... [2023-12-02 13:08:42,941 INFO L112 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound20.c [2023-12-02 13:08:42,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:08:42,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-12-02 13:08:42,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:08:43,004 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;@6afe5a77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:08:43,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-12-02 13:08:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 64 states have internal predecessors, (66), 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) [2023-12-02 13:08:43,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:08:43,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:43,014 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:43,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:43,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:43,020 INFO L85 PathProgramCache]: Analyzing trace with hash 587997184, now seen corresponding path program 1 times [2023-12-02 13:08:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:43,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428257758] [2023-12-02 13:08:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:43,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428257758] [2023-12-02 13:08:43,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-02 13:08:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794587213] [2023-12-02 13:08:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:43,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:43,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:43,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:43,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:08:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:43,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:08:43,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:08:43,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:08:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794587213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:43,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:08:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608299746] [2023-12-02 13:08:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:43,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:08:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:08:43,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:08:43,309 INFO L87 Difference]: Start difference. First operand has 71 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 64 states have internal predecessors, (66), 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) [2023-12-02 13:08:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:43,339 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2023-12-02 13:08:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:08:43,342 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 [2023-12-02 13:08:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:43,348 INFO L225 Difference]: With dead ends: 96 [2023-12-02 13:08:43,349 INFO L226 Difference]: Without dead ends: 68 [2023-12-02 13:08:43,351 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 [2023-12-02 13:08:43,354 INFO L413 NwaCegarLoop]: 69 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, 69 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 [2023-12-02 13:08:43,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:08:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-02 13:08:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-02 13:08:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 35 states have (on average 1.8) internal successors, (63), 62 states have internal predecessors, (63), 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) [2023-12-02 13:08:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2023-12-02 13:08:43,392 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 11 [2023-12-02 13:08:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:43,394 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2023-12-02 13:08:43,394 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) [2023-12-02 13:08:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2023-12-02 13:08:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:08:43,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:43,396 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:43,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:08:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 13:08:43,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:43,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 587993729, now seen corresponding path program 1 times [2023-12-02 13:08:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:43,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276813298] [2023-12-02 13:08:43,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:43,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:43,617 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:43,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548082034] [2023-12-02 13:08:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:43,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:43,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:43,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:43,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:08:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:43,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:08:43,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:08:43,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:08:43,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276813298] [2023-12-02 13:08:43,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:43,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548082034] [2023-12-02 13:08:43,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548082034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:43,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940399002] [2023-12-02 13:08:43,855 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 13:08:43,855 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:08:43,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:08:43,864 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:08:43,864 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:08:44,219 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:08:44,278 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:08:44,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1940399002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:44,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:08:44,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4] total 13 [2023-12-02 13:08:44,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920977116] [2023-12-02 13:08:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:44,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:08:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:44,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:08:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:08:44,896 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 9 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:08:45,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:45,392 INFO L93 Difference]: Finished difference Result 115 states and 117 transitions. [2023-12-02 13:08:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:08:45,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2023-12-02 13:08:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:45,394 INFO L225 Difference]: With dead ends: 115 [2023-12-02 13:08:45,394 INFO L226 Difference]: Without dead ends: 83 [2023-12-02 13:08:45,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:08:45,397 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 265 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:45,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 15 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:08:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-02 13:08:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-02 13:08:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 76 states have internal predecessors, (77), 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) [2023-12-02 13:08:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2023-12-02 13:08:45,412 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 11 [2023-12-02 13:08:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:45,419 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2023-12-02 13:08:45,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:08:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2023-12-02 13:08:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 13:08:45,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:45,421 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] [2023-12-02 13:08:45,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:08:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 13:08:45,624 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:45,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1297182891, now seen corresponding path program 1 times [2023-12-02 13:08:45,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:45,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929138328] [2023-12-02 13:08:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:45,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:45,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:45,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387069185] [2023-12-02 13:08:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:45,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:45,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:45,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:45,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:08:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:45,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:08:45,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:08:45,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:08:45,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:45,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929138328] [2023-12-02 13:08:45,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:45,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387069185] [2023-12-02 13:08:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387069185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:45,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:45,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:08:45,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856955213] [2023-12-02 13:08:45,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:45,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:45,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:45,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:45,741 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2023-12-02 13:08:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:45,816 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2023-12-02 13:08:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:45,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 [2023-12-02 13:08:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:45,818 INFO L225 Difference]: With dead ends: 83 [2023-12-02 13:08:45,818 INFO L226 Difference]: Without dead ends: 78 [2023-12-02 13:08:45,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:45,820 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:45,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-02 13:08:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-02 13:08:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 49 states have (on average 1.469387755102041) internal successors, (72), 71 states have internal predecessors, (72), 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) [2023-12-02 13:08:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2023-12-02 13:08:45,833 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 27 [2023-12-02 13:08:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:45,833 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2023-12-02 13:08:45,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-12-02 13:08:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2023-12-02 13:08:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 13:08:45,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:45,835 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] [2023-12-02 13:08:45,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 13:08:46,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:46,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:46,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1557964036, now seen corresponding path program 1 times [2023-12-02 13:08:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573108081] [2023-12-02 13:08:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:46,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714359116] [2023-12-02 13:08:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:46,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:46,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:46,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:46,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:08:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:46,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:08:46,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:08:46,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:08:46,134 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573108081] [2023-12-02 13:08:46,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714359116] [2023-12-02 13:08:46,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714359116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:46,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:08:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769011941] [2023-12-02 13:08:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:46,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:46,137 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2023-12-02 13:08:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:46,211 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2023-12-02 13:08:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:46,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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 [2023-12-02 13:08:46,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:46,213 INFO L225 Difference]: With dead ends: 78 [2023-12-02 13:08:46,214 INFO L226 Difference]: Without dead ends: 76 [2023-12-02 13:08:46,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:46,215 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:46,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-02 13:08:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-02 13:08:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 69 states have internal predecessors, (70), 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) [2023-12-02 13:08:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2023-12-02 13:08:46,227 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 28 [2023-12-02 13:08:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:46,227 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2023-12-02 13:08:46,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 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) [2023-12-02 13:08:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2023-12-02 13:08:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 13:08:46,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:46,229 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] [2023-12-02 13:08:46,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 13:08:46,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:46,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:46,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:46,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145114, now seen corresponding path program 1 times [2023-12-02 13:08:46,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:46,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170906512] [2023-12-02 13:08:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:46,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:46,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616465857] [2023-12-02 13:08:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:46,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:46,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:46,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:46,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:08:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:46,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:08:46,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:08:46,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:08:46,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170906512] [2023-12-02 13:08:46,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616465857] [2023-12-02 13:08:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616465857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:46,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:08:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518722868] [2023-12-02 13:08:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:46,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:46,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:46,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:46,537 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-12-02 13:08:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:46,606 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2023-12-02 13:08:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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 30 [2023-12-02 13:08:46,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:46,608 INFO L225 Difference]: With dead ends: 76 [2023-12-02 13:08:46,608 INFO L226 Difference]: Without dead ends: 74 [2023-12-02 13:08:46,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:46,610 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:46,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 33 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-02 13:08:46,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-02 13:08:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 67 states have internal predecessors, (68), 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) [2023-12-02 13:08:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-12-02 13:08:46,620 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 30 [2023-12-02 13:08:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:46,621 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-12-02 13:08:46,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-12-02 13:08:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-12-02 13:08:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:08:46,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:46,622 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:46,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:08:46,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:46,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:46,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1890076399, now seen corresponding path program 1 times [2023-12-02 13:08:46,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988592288] [2023-12-02 13:08:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:46,835 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846512901] [2023-12-02 13:08:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:46,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:46,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:46,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:08:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:46,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:08:46,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:08:46,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:08:46,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:46,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988592288] [2023-12-02 13:08:46,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:46,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846512901] [2023-12-02 13:08:46,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846512901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:46,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:46,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:08:46,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322196305] [2023-12-02 13:08:46,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:46,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:46,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:46,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:46,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:46,922 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-12-02 13:08:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:47,079 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2023-12-02 13:08:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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 31 [2023-12-02 13:08:47,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:47,080 INFO L225 Difference]: With dead ends: 74 [2023-12-02 13:08:47,080 INFO L226 Difference]: Without dead ends: 72 [2023-12-02 13:08:47,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:47,082 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:47,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 35 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-02 13:08:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-02 13:08:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 49 states have (on average 1.346938775510204) internal successors, (66), 65 states have internal predecessors, (66), 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) [2023-12-02 13:08:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2023-12-02 13:08:47,092 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 31 [2023-12-02 13:08:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:47,093 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2023-12-02 13:08:47,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-12-02 13:08:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2023-12-02 13:08:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 13:08:47,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:47,094 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:47,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:08:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 13:08:47,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:47,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1537173688, now seen corresponding path program 1 times [2023-12-02 13:08:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407549175] [2023-12-02 13:08:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:47,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:47,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:47,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004167927] [2023-12-02 13:08:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:47,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:47,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:47,309 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:47,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:08:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:47,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:08:47,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:08:47,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:08:47,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:47,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407549175] [2023-12-02 13:08:47,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:47,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004167927] [2023-12-02 13:08:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004167927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:08:47,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:08:47,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:08:47,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145796535] [2023-12-02 13:08:47,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:08:47,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:08:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:08:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:08:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:47,384 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-12-02 13:08:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:47,487 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2023-12-02 13:08:47,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:08:47,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 32 [2023-12-02 13:08:47,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:47,488 INFO L225 Difference]: With dead ends: 72 [2023-12-02 13:08:47,488 INFO L226 Difference]: Without dead ends: 70 [2023-12-02 13:08:47,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:08:47,489 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:47,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:08:47,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-12-02 13:08:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-12-02 13:08:47,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 63 states have internal predecessors, (64), 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) [2023-12-02 13:08:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2023-12-02 13:08:47,499 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 32 [2023-12-02 13:08:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:47,499 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2023-12-02 13:08:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-12-02 13:08:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2023-12-02 13:08:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 13:08:47,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:47,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:08:47,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:08:47,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:47,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:08:47,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash 244837098, now seen corresponding path program 1 times [2023-12-02 13:08:47,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:08:47,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526281011] [2023-12-02 13:08:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:47,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:08:47,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:08:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797525292] [2023-12-02 13:08:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:47,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:47,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:47,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:47,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:08:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:47,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:08:47,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:08:47,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:48,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:08:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526281011] [2023-12-02 13:08:48,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:08:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797525292] [2023-12-02 13:08:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797525292] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:08:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1098046423] [2023-12-02 13:08:48,171 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:08:48,171 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:08:48,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:08:48,172 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:08:48,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:08:49,996 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:08:50,003 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:08:50,043 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:09:03,315 WARN L293 SmtUtils]: Spent 10.04s on a formula simplification. DAG size of input: 80 DAG size of output: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:09:41,856 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1993#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) 0) (<= |ULTIMATE.start_main_~z~0#1| 20) (exists ((|v_ULTIMATE.start_main_~x~0#1_62| Int) (|v_ULTIMATE.start_main_~y~0#1_41| Int)) (and (= |ULTIMATE.start_main_~x~0#1| (+ (* |v_ULTIMATE.start_main_~x~0#1_62| |ULTIMATE.start_main_~z~0#1|) 1)) (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_41| |ULTIMATE.start_main_~z~0#1|)) (= (+ |v_ULTIMATE.start_main_~x~0#1_62| (* |v_ULTIMATE.start_main_~y~0#1_41| |ULTIMATE.start_main_~z~0#1|)) (+ (* |v_ULTIMATE.start_main_~x~0#1_62| |ULTIMATE.start_main_~z~0#1|) 1)) (<= 0 (+ (* |v_ULTIMATE.start_main_~x~0#1_62| |ULTIMATE.start_main_~z~0#1|) 9223372036854775808)))) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:09:41,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:09:41,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:09:41,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:09:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736021327] [2023-12-02 13:09:41,857 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:09:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:09:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:09:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=884, Unknown=1, NotChecked=0, Total=1056 [2023-12-02 13:09:41,858 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 6 states, 4 states have (on average 7.0) internal successors, (28), 6 states have internal predecessors, (28), 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) [2023-12-02 13:09:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:41,997 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2023-12-02 13:09:41,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:09:41,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 6 states have internal predecessors, (28), 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 34 [2023-12-02 13:09:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:41,998 INFO L225 Difference]: With dead ends: 74 [2023-12-02 13:09:41,998 INFO L226 Difference]: Without dead ends: 73 [2023-12-02 13:09:41,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 51.9s TimeCoverageRelationStatistics Valid=171, Invalid=884, Unknown=1, NotChecked=0, Total=1056 [2023-12-02 13:09:41,999 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:42,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:09:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-02 13:09:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2023-12-02 13:09:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 62 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) [2023-12-02 13:09:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2023-12-02 13:09:42,007 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 34 [2023-12-02 13:09:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:42,008 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2023-12-02 13:09:42,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 6 states have internal predecessors, (28), 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) [2023-12-02 13:09:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2023-12-02 13:09:42,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 13:09:42,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:42,009 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, 1, 1] [2023-12-02 13:09:42,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 13:09:42,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 13:09:42,210 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:09:42,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash -999984505, now seen corresponding path program 1 times [2023-12-02 13:09:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569772983] [2023-12-02 13:09:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:42,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:42,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:09:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579585185] [2023-12-02 13:09:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:42,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:09:42,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:42,221 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:09:42,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:09:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:42,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:09:42,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:09:42,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:42,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569772983] [2023-12-02 13:09:42,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:09:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579585185] [2023-12-02 13:09:42,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579585185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:09:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1993645103] [2023-12-02 13:09:42,556 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:09:42,556 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:09:42,557 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:09:42,557 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:09:42,557 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:09:43,790 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:09:43,801 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:09:43,841 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:10:13,968 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2326#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| 20) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:10:13,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:10:13,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:10:13,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:10:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549423153] [2023-12-02 13:10:13,969 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:10:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:10:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:10:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:10:13,970 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 6 states, 4 states have (on average 7.25) internal successors, (29), 6 states have internal predecessors, (29), 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) [2023-12-02 13:10:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:15,059 INFO L93 Difference]: Finished difference Result 118 states and 121 transitions. [2023-12-02 13:10:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:10:15,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 6 states have internal predecessors, (29), 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 35 [2023-12-02 13:10:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:15,060 INFO L225 Difference]: With dead ends: 118 [2023-12-02 13:10:15,060 INFO L226 Difference]: Without dead ends: 116 [2023-12-02 13:10:15,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:10:15,061 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 115 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:15,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 43 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:10:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-02 13:10:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2023-12-02 13:10:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 73 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) [2023-12-02 13:10:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2023-12-02 13:10:15,071 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 35 [2023-12-02 13:10:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:15,071 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2023-12-02 13:10:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 6 states have internal predecessors, (29), 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) [2023-12-02 13:10:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2023-12-02 13:10:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 13:10:15,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:15,073 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, 1, 1] [2023-12-02 13:10:15,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:10:15,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:15,273 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:10:15,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:15,274 INFO L85 PathProgramCache]: Analyzing trace with hash -645172690, now seen corresponding path program 1 times [2023-12-02 13:10:15,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:10:15,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839090281] [2023-12-02 13:10:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:15,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:10:15,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:10:15,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746014119] [2023-12-02 13:10:15,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:10:15,283 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:10:15,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:10:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:10:15,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:10:15,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:10:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:10:15,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:10:16,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:10:16,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839090281] [2023-12-02 13:10:16,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:10:16,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746014119] [2023-12-02 13:10:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746014119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:10:16,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1672004422] [2023-12-02 13:10:16,403 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:10:16,403 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:10:16,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:10:16,403 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:10:16,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:10:17,475 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:10:17,481 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:10:17,505 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:10:52,757 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2783#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= (+ 9223372036854775810 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 20) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:10:52,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:10:52,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:10:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 13:10:52,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230314838] [2023-12-02 13:10:52,758 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:10:52,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:10:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:10:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:10:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1007, Unknown=3, NotChecked=0, Total=1260 [2023-12-02 13:10:52,760 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 7 states have internal predecessors, (32), 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) [2023-12-02 13:10:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:10:54,424 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2023-12-02 13:10:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:10:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 7 states have internal predecessors, (32), 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 38 [2023-12-02 13:10:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:10:54,426 INFO L225 Difference]: With dead ends: 80 [2023-12-02 13:10:54,426 INFO L226 Difference]: Without dead ends: 76 [2023-12-02 13:10:54,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=260, Invalid=1069, Unknown=3, NotChecked=0, Total=1332 [2023-12-02 13:10:54,427 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 107 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:10:54,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 31 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 13:10:54,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-02 13:10:54,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-02 13:10:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 69 states have internal predecessors, (70), 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) [2023-12-02 13:10:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2023-12-02 13:10:54,436 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 38 [2023-12-02 13:10:54,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:10:54,436 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2023-12-02 13:10:54,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 7 states have internal predecessors, (32), 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) [2023-12-02 13:10:54,437 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2023-12-02 13:10:54,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 13:10:54,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:10:54,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:10:54,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 13:10:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:54,639 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:10:54,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:10:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1535662640, now seen corresponding path program 1 times [2023-12-02 13:10:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:10:54,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959197675] [2023-12-02 13:10:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:54,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:10:54,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:10:54,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312103660] [2023-12-02 13:10:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:10:54,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:54,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:10:54,647 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:10:54,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 13:10:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:10:54,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:10:54,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:10:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:10:54,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:10:55,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:10:55,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959197675] [2023-12-02 13:10:55,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:10:55,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312103660] [2023-12-02 13:10:55,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312103660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:10:55,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1622267213] [2023-12-02 13:10:55,023 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:10:55,023 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:10:55,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:10:55,024 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:10:55,024 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:10:56,139 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:10:56,145 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:10:56,171 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:11:31,194 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3163#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~x~0#1| (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 9223372036854775809) 0) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 20) (<= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ 9223372036854775806 |ULTIMATE.start_main_~x~0#1|)) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:11:31,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:11:31,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:11:31,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:11:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673884176] [2023-12-02 13:11:31,194 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:11:31,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:11:31,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:11:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:11:31,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:11:31,196 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 6 states have internal predecessors, (34), 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) [2023-12-02 13:11:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:11:31,365 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2023-12-02 13:11:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:11:31,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 6 states have internal predecessors, (34), 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 40 [2023-12-02 13:11:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:11:31,367 INFO L225 Difference]: With dead ends: 76 [2023-12-02 13:11:31,367 INFO L226 Difference]: Without dead ends: 75 [2023-12-02 13:11:31,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 13:11:31,368 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:11:31,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 53 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:11:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-02 13:11:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-02 13:11:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 60 states have (on average 1.15) internal successors, (69), 68 states have internal predecessors, (69), 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) [2023-12-02 13:11:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2023-12-02 13:11:31,376 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 40 [2023-12-02 13:11:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:11:31,376 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2023-12-02 13:11:31,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 6 states have internal predecessors, (34), 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) [2023-12-02 13:11:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2023-12-02 13:11:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 13:11:31,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:31,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:11:31,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 13:11:31,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:31,578 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:11:31,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -360901523, now seen corresponding path program 1 times [2023-12-02 13:11:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:11:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336741200] [2023-12-02 13:11:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:31,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:11:31,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:11:31,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404688605] [2023-12-02 13:11:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:31,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:11:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:11:31,587 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:11:31,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 13:11:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:31,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:11:31,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:11:31,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:11:31,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:11:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336741200] [2023-12-02 13:11:31,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:11:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404688605] [2023-12-02 13:11:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404688605] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:11:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [354892638] [2023-12-02 13:11:31,945 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:11:31,945 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:11:31,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:11:31,946 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:11:31,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:11:33,000 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:11:33,006 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:11:33,035 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:12:08,883 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3544#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~x~0#1| (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (<= 1 |#StackHeapBarrier|) (<= 9223372036854775808 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 20) (<= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ 9223372036854775806 |ULTIMATE.start_main_~x~0#1|)) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:12:08,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:12:08,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:12:08,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 13:12:08,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953355148] [2023-12-02 13:12:08,883 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:12:08,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:12:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:12:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:12:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:12:08,884 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:12:09,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:09,349 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2023-12-02 13:12:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:12:09,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2023-12-02 13:12:09,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:12:09,350 INFO L225 Difference]: With dead ends: 108 [2023-12-02 13:12:09,350 INFO L226 Difference]: Without dead ends: 107 [2023-12-02 13:12:09,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 13:12:09,351 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 94 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:12:09,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 60 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:12:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-02 13:12:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 79. [2023-12-02 13:12:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.140625) internal successors, (73), 72 states have internal predecessors, (73), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:12:09,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2023-12-02 13:12:09,359 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 41 [2023-12-02 13:12:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:12:09,359 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2023-12-02 13:12:09,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 13:12:09,360 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2023-12-02 13:12:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 13:12:09,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:12:09,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:12:09,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 13:12:09,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:09,561 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:12:09,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:12:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1696954738, now seen corresponding path program 1 times [2023-12-02 13:12:09,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:12:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590220344] [2023-12-02 13:12:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:12:09,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:12:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981969980] [2023-12-02 13:12:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:09,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:09,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:12:09,571 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:12:09,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:12:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:12:09,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:12:09,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:12:09,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:12:10,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:12:10,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590220344] [2023-12-02 13:12:10,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:12:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981969980] [2023-12-02 13:12:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981969980] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:12:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104499258] [2023-12-02 13:12:10,022 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:12:10,022 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:12:10,022 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:12:10,022 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:12:10,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:12:11,184 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:12:11,190 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:12:11,215 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:12:44,877 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3968#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= (+ 9223372036854775810 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|)) (<= |ULTIMATE.start_main_~x~0#1| (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|))) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 20) (<= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:12:44,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:12:44,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:12:44,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 13:12:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563828720] [2023-12-02 13:12:44,878 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:12:44,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:12:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:12:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:12:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1004, Unknown=1, NotChecked=0, Total=1190 [2023-12-02 13:12:44,880 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 7 states, 5 states have (on average 7.2) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-12-02 13:12:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:45,308 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2023-12-02 13:12:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:12:45,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 7 states have internal predecessors, (36), 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 42 [2023-12-02 13:12:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:12:45,310 INFO L225 Difference]: With dead ends: 105 [2023-12-02 13:12:45,310 INFO L226 Difference]: Without dead ends: 103 [2023-12-02 13:12:45,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=185, Invalid=1004, Unknown=1, NotChecked=0, Total=1190 [2023-12-02 13:12:45,311 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 62 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:12:45,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 69 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:12:45,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-02 13:12:45,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2023-12-02 13:12:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 76 states have (on average 1.144736842105263) internal successors, (87), 84 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:12:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2023-12-02 13:12:45,321 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 42 [2023-12-02 13:12:45,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:12:45,321 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2023-12-02 13:12:45,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.2) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-12-02 13:12:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2023-12-02 13:12:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 13:12:45,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:12:45,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:12:45,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:12:45,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:45,523 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:12:45,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:12:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1065989391, now seen corresponding path program 1 times [2023-12-02 13:12:45,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:12:45,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930951657] [2023-12-02 13:12:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:12:45,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:12:45,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969175532] [2023-12-02 13:12:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:45,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:45,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:12:45,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:12:45,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 13:12:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:12:45,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:12:45,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:12:45,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:12:46,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:12:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930951657] [2023-12-02 13:12:46,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:12:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969175532] [2023-12-02 13:12:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969175532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:12:46,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1634816255] [2023-12-02 13:12:46,117 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:12:46,117 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:12:46,117 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:12:46,117 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:12:46,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:12:47,238 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:12:47,248 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:12:47,272 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:13:15,595 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4409#(and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 20) (<= 0 (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 9223372036854775808)) (<= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ 9223372036854775806 |ULTIMATE.start_main_~x~0#1|)) (<= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 9223372036854775807 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:13:15,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:13:15,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:13:15,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 13:13:15,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426185229] [2023-12-02 13:13:15,596 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:13:15,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:13:15,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:13:15,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:13:15,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 13:13:15,598 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 7 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-12-02 13:13:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:15,877 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2023-12-02 13:13:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:13:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 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 43 [2023-12-02 13:13:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:15,878 INFO L225 Difference]: With dead ends: 92 [2023-12-02 13:13:15,878 INFO L226 Difference]: Without dead ends: 80 [2023-12-02 13:13:15,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=186, Invalid=1004, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 13:13:15,879 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:15,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 58 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:13:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-02 13:13:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-02 13:13:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.106060606060606) internal successors, (73), 72 states have internal predecessors, (73), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:13:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2023-12-02 13:13:15,889 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 43 [2023-12-02 13:13:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:15,890 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2023-12-02 13:13:15,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.4) internal successors, (37), 7 states have internal predecessors, (37), 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) [2023-12-02 13:13:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2023-12-02 13:13:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 13:13:15,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:15,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:15,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 13:13:16,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 13:13:16,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:13:16,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 215290418, now seen corresponding path program 1 times [2023-12-02 13:13:16,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:13:16,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427737198] [2023-12-02 13:13:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:16,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:13:16,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:13:16,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712965558] [2023-12-02 13:13:16,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:16,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:16,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:13:16,100 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:13:16,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 13:13:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:16,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:13:16,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:13:16,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:13:16,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:13:16,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427737198] [2023-12-02 13:13:16,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:13:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712965558] [2023-12-02 13:13:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712965558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:16,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:13:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:13:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002255757] [2023-12-02 13:13:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:13:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:13:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:13:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:13:16,177 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:13:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:13:16,197 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2023-12-02 13:13:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:13:16,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2023-12-02 13:13:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:13:16,198 INFO L225 Difference]: With dead ends: 80 [2023-12-02 13:13:16,198 INFO L226 Difference]: Without dead ends: 79 [2023-12-02 13:13:16,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:13:16,199 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 31 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:13:16,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 69 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:13:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-02 13:13:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-02 13:13:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 71 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:13:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2023-12-02 13:13:16,208 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 48 [2023-12-02 13:13:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:13:16,208 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2023-12-02 13:13:16,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:13:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2023-12-02 13:13:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 13:13:16,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:13:16,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:13:16,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 13:13:16,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 13:13:16,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:13:16,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:13:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1915931559, now seen corresponding path program 1 times [2023-12-02 13:13:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:13:16,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631882888] [2023-12-02 13:13:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:16,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:13:16,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:13:16,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1935764560] [2023-12-02 13:13:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:13:16,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:13:16,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:13:16,419 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:13:16,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 13:13:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:13:16,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:13:16,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:13:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:13:16,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:13:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:13:16,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:13:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631882888] [2023-12-02 13:13:16,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:13:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935764560] [2023-12-02 13:13:16,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935764560] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:13:16,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1446027902] [2023-12-02 13:13:16,542 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:13:16,542 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:13:16,543 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:13:16,543 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:13:16,543 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:13:17,598 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:13:17,604 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:13:17,628 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:13:37,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1446027902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:13:37,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:13:37,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [3, 3] total 29 [2023-12-02 13:13:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999426603] [2023-12-02 13:13:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:13:37,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 13:13:37,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:13:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 13:13:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2023-12-02 13:13:37,561 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 26 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2023-12-02 13:13:41,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:13:48,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 13:13:57,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:14:11,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:14:12,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:14:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:14:13,137 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2023-12-02 13:14:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 13:14:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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 49 [2023-12-02 13:14:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:14:13,138 INFO L225 Difference]: With dead ends: 79 [2023-12-02 13:14:13,138 INFO L226 Difference]: Without dead ends: 66 [2023-12-02 13:14:13,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=346, Invalid=1136, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 13:14:13,140 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 244 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:14:13,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 34 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2023-12-02 13:14:13,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-02 13:14:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-12-02 13:14:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 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) [2023-12-02 13:14:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2023-12-02 13:14:13,150 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 49 [2023-12-02 13:14:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:14:13,150 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2023-12-02 13:14:13,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2023-12-02 13:14:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2023-12-02 13:14:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 13:14:13,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:14:13,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:14:13,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-02 13:14:13,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 13:14:13,352 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:14:13,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:14:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2008604656, now seen corresponding path program 2 times [2023-12-02 13:14:13,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:14:13,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012423969] [2023-12-02 13:14:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:13,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:14:13,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:14:13,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544901491] [2023-12-02 13:14:13,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:14:13,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:13,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:14:13,362 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:14:13,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 13:14:13,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:14:13,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:14:13,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:14:13,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:14:13,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:14:14,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:14:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012423969] [2023-12-02 13:14:14,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:14:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544901491] [2023-12-02 13:14:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544901491] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:14:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1570516104] [2023-12-02 13:14:14,096 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:14:14,096 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:14:14,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:14:14,096 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:14:14,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:14:15,160 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:14:15,166 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:14:15,190 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:14:46,419 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5663#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (exists ((|v_ULTIMATE.start_main_~y~0#1_86| Int) (|v_ULTIMATE.start_main_~x~0#1_109| Int)) (and (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_86| |ULTIMATE.start_main_~z~0#1|)) (<= (* |v_ULTIMATE.start_main_~x~0#1_109| |ULTIMATE.start_main_~z~0#1|) 9223372036854775806) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_109| |ULTIMATE.start_main_~z~0#1|) 1) |ULTIMATE.start_main_~x~0#1|) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_109| |ULTIMATE.start_main_~z~0#1|) 1) (+ |v_ULTIMATE.start_main_~x~0#1_109| (* |v_ULTIMATE.start_main_~y~0#1_86| |ULTIMATE.start_main_~z~0#1|))))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:14:46,419 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:14:46,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:14:46,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-12-02 13:14:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278292266] [2023-12-02 13:14:46,420 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:14:46,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:14:46,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:14:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:14:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 13:14:46,421 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 9 states, 6 states have (on average 8.333333333333334) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:14:48,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 13:14:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:14:49,473 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2023-12-02 13:14:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:14:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 8.333333333333334) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2023-12-02 13:14:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:14:49,475 INFO L225 Difference]: With dead ends: 96 [2023-12-02 13:14:49,475 INFO L226 Difference]: Without dead ends: 94 [2023-12-02 13:14:49,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=199, Invalid=1133, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 13:14:49,476 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 70 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:14:49,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 50 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 13:14:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-02 13:14:49,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2023-12-02 13:14:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:14:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2023-12-02 13:14:49,490 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 58 [2023-12-02 13:14:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:14:49,491 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2023-12-02 13:14:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 8.333333333333334) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 13:14:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2023-12-02 13:14:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 13:14:49,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:14:49,492 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:14:49,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 13:14:49,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 13:14:49,693 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:14:49,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:14:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1115788185, now seen corresponding path program 3 times [2023-12-02 13:14:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:14:49,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299928465] [2023-12-02 13:14:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:49,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:14:49,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:14:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138315438] [2023-12-02 13:14:49,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:14:49,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:49,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:14:49,701 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:14:49,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 13:14:49,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:14:49,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:14:49,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 13:14:49,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 13:14:50,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:14:50,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:14:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299928465] [2023-12-02 13:14:50,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:14:50,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138315438] [2023-12-02 13:14:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138315438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:14:50,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934801315] [2023-12-02 13:14:50,544 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:14:50,544 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:14:50,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:14:50,544 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:14:50,544 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:14:51,643 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:14:51,650 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:14:51,676 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:15:33,487 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6183#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_119| Int) (|v_ULTIMATE.start_main_~y~0#1_95| Int)) (and (= (* |v_ULTIMATE.start_main_~y~0#1_95| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ (* |v_ULTIMATE.start_main_~x~0#1_119| |ULTIMATE.start_main_~z~0#1|) 1)) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_95| |ULTIMATE.start_main_~z~0#1|) |v_ULTIMATE.start_main_~x~0#1_119|) (+ (* |v_ULTIMATE.start_main_~x~0#1_119| |ULTIMATE.start_main_~z~0#1|) 1)) (<= (* |v_ULTIMATE.start_main_~x~0#1_119| |ULTIMATE.start_main_~z~0#1|) 9223372036854775806))) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:15:33,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:15:33,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:15:33,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-02 13:15:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585190480] [2023-12-02 13:15:33,488 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:15:33,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 13:15:33,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:15:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 13:15:33,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1342, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 13:15:33,489 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 12 states, 9 states have (on average 7.666666666666667) internal successors, (69), 12 states have internal predecessors, (69), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:15:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:15:33,798 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2023-12-02 13:15:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 13:15:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.666666666666667) internal successors, (69), 12 states have internal predecessors, (69), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 81 [2023-12-02 13:15:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:15:33,800 INFO L225 Difference]: With dead ends: 117 [2023-12-02 13:15:33,800 INFO L226 Difference]: Without dead ends: 115 [2023-12-02 13:15:33,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=218, Invalid=1342, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 13:15:33,801 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:15:33,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 129 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:15:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-02 13:15:33,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 100. [2023-12-02 13:15:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 13:15:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2023-12-02 13:15:33,814 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 81 [2023-12-02 13:15:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:15:33,814 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2023-12-02 13:15:33,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.666666666666667) internal successors, (69), 12 states have internal predecessors, (69), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:15:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2023-12-02 13:15:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-02 13:15:33,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:15:33,816 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:15:33,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 13:15:34,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 13:15:34,016 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:15:34,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:15:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash -923481584, now seen corresponding path program 4 times [2023-12-02 13:15:34,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:15:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129844595] [2023-12-02 13:15:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:15:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:15:34,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:15:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798189400] [2023-12-02 13:15:34,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 13:15:34,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:15:34,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:15:34,025 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:15:34,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 13:15:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:15:34,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 13:15:34,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:15:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 139 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 13:15:35,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:15:36,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:15:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129844595] [2023-12-02 13:15:36,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:15:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798189400] [2023-12-02 13:15:36,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798189400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:15:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204219228] [2023-12-02 13:15:36,017 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:15:36,018 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:15:36,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:15:36,018 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:15:36,018 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:15:37,083 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:15:37,089 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:15:37,113 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:15:47,938 WARN L293 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 78 DAG size of output: 33 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:16:22,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6819#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (exists ((|v_ULTIMATE.start_main_~y~0#1_105| Int) (|v_ULTIMATE.start_main_~x~0#1_130| Int)) (and (<= (* |v_ULTIMATE.start_main_~x~0#1_130| |ULTIMATE.start_main_~z~0#1|) 9223372036854775806) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_130| |ULTIMATE.start_main_~z~0#1|) 1) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_105| |ULTIMATE.start_main_~z~0#1|)) (= (+ (* |v_ULTIMATE.start_main_~x~0#1_130| |ULTIMATE.start_main_~z~0#1|) 1) (+ |v_ULTIMATE.start_main_~x~0#1_130| (* |v_ULTIMATE.start_main_~y~0#1_105| |ULTIMATE.start_main_~z~0#1|))))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:16:22,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:16:22,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:16:22,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-02 13:16:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95768634] [2023-12-02 13:16:22,016 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:16:22,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 13:16:22,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:16:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 13:16:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1565, Unknown=1, NotChecked=0, Total=1806 [2023-12-02 13:16:22,017 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand has 15 states, 12 states have (on average 7.416666666666667) internal successors, (89), 15 states have internal predecessors, (89), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 13:16:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:16:22,798 INFO L93 Difference]: Finished difference Result 138 states and 144 transitions. [2023-12-02 13:16:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 13:16:22,799 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 7.416666666666667) internal successors, (89), 15 states have internal predecessors, (89), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 104 [2023-12-02 13:16:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:16:22,800 INFO L225 Difference]: With dead ends: 138 [2023-12-02 13:16:22,800 INFO L226 Difference]: Without dead ends: 136 [2023-12-02 13:16:22,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 173 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=240, Invalid=1565, Unknown=1, NotChecked=0, Total=1806 [2023-12-02 13:16:22,802 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:16:22,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 185 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:16:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-02 13:16:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 121. [2023-12-02 13:16:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 110 states have (on average 1.018181818181818) internal successors, (112), 111 states have internal predecessors, (112), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 13:16:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2023-12-02 13:16:22,821 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 104 [2023-12-02 13:16:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:16:22,821 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2023-12-02 13:16:22,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 7.416666666666667) internal successors, (89), 15 states have internal predecessors, (89), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 13:16:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2023-12-02 13:16:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 13:16:22,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:16:22,823 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:16:22,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 13:16:23,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:16:23,024 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:16:23,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:16:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash 648879687, now seen corresponding path program 5 times [2023-12-02 13:16:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:16:23,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921031204] [2023-12-02 13:16:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:16:23,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:16:23,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792862734] [2023-12-02 13:16:23,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:16:23,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:16:23,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:16:23,033 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:16:23,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 13:16:23,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 13:16:23,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:16:23,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-02 13:16:23,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:16:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 13:16:24,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:16:25,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:16:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921031204] [2023-12-02 13:16:25,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:16:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792862734] [2023-12-02 13:16:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792862734] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:16:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1496061261] [2023-12-02 13:16:25,170 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:16:25,170 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:16:25,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:16:25,171 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:16:25,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:16:26,282 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:16:26,288 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:16:26,312 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:17:17,463 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7571#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y~0#1_116| Int) (|v_ULTIMATE.start_main_~x~0#1_142| Int)) (and (= (+ (* |v_ULTIMATE.start_main_~y~0#1_116| |ULTIMATE.start_main_~z~0#1|) |v_ULTIMATE.start_main_~x~0#1_142|) (+ 1 (* |v_ULTIMATE.start_main_~x~0#1_142| |ULTIMATE.start_main_~z~0#1|))) (<= (* |v_ULTIMATE.start_main_~x~0#1_142| |ULTIMATE.start_main_~z~0#1|) 9223372036854775806) (= (* |v_ULTIMATE.start_main_~y~0#1_116| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ 1 (* |v_ULTIMATE.start_main_~x~0#1_142| |ULTIMATE.start_main_~z~0#1|))))) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:17:17,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:17:17,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:17:17,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-02 13:17:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281149890] [2023-12-02 13:17:17,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:17:17,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 13:17:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:17:17,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 13:17:17,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1645, Unknown=1, NotChecked=0, Total=1892 [2023-12-02 13:17:17,466 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand has 16 states, 13 states have (on average 8.384615384615385) internal successors, (109), 16 states have internal predecessors, (109), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 13:17:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:17:18,492 INFO L93 Difference]: Finished difference Result 159 states and 166 transitions. [2023-12-02 13:17:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 13:17:18,493 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 8.384615384615385) internal successors, (109), 16 states have internal predecessors, (109), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 127 [2023-12-02 13:17:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:17:18,494 INFO L225 Difference]: With dead ends: 159 [2023-12-02 13:17:18,494 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 13:17:18,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 219 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=246, Invalid=1645, Unknown=1, NotChecked=0, Total=1892 [2023-12-02 13:17:18,495 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:17:18,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 299 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 13:17:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 13:17:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 142. [2023-12-02 13:17:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 13:17:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 148 transitions. [2023-12-02 13:17:18,516 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 148 transitions. Word has length 127 [2023-12-02 13:17:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:17:18,516 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 148 transitions. [2023-12-02 13:17:18,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 8.384615384615385) internal successors, (109), 16 states have internal predecessors, (109), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 13:17:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 148 transitions. [2023-12-02 13:17:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-02 13:17:18,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:17:18,518 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:17:18,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 13:17:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:17:18,719 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:17:18,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:17:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2127823824, now seen corresponding path program 6 times [2023-12-02 13:17:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:17:18,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322251059] [2023-12-02 13:17:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:17:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:17:18,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:17:18,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799865215] [2023-12-02 13:17:18,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:17:18,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:17:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:17:18,731 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:17:18,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 13:17:20,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:17:20,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:17:20,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 13:17:20,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:17:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-02 13:17:22,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:17:23,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:17:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322251059] [2023-12-02 13:17:23,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:17:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799865215] [2023-12-02 13:17:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799865215] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:17:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225288192] [2023-12-02 13:17:23,013 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:17:23,014 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:17:23,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:17:23,014 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:17:23,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:17:24,084 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:17:24,090 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:17:24,113 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:18:10,611 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8441#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (exists ((|v_ULTIMATE.start_main_~x~0#1_155| Int) (|v_ULTIMATE.start_main_~y~0#1_128| Int)) (and (= (+ |v_ULTIMATE.start_main_~x~0#1_155| (* |v_ULTIMATE.start_main_~y~0#1_128| |ULTIMATE.start_main_~z~0#1|)) (+ (* |v_ULTIMATE.start_main_~x~0#1_155| |ULTIMATE.start_main_~z~0#1|) 1)) (= |ULTIMATE.start_main_~y~0#1| (* |v_ULTIMATE.start_main_~y~0#1_128| |ULTIMATE.start_main_~z~0#1|)) (= |ULTIMATE.start_main_~x~0#1| (+ (* |v_ULTIMATE.start_main_~x~0#1_155| |ULTIMATE.start_main_~z~0#1|) 1)) (<= (* |v_ULTIMATE.start_main_~x~0#1_155| |ULTIMATE.start_main_~z~0#1|) 9223372036854775806))) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:18:10,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:18:10,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:18:10,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-12-02 13:18:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328825931] [2023-12-02 13:18:10,611 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:18:10,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 13:18:10,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:18:10,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 13:18:10,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1894, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 13:18:10,613 INFO L87 Difference]: Start difference. First operand 142 states and 148 transitions. Second operand has 19 states, 16 states have (on average 8.0625) internal successors, (129), 19 states have internal predecessors, (129), 8 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 13:18:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:18:12,404 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2023-12-02 13:18:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 13:18:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.0625) internal successors, (129), 19 states have internal predecessors, (129), 8 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 150 [2023-12-02 13:18:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:18:12,406 INFO L225 Difference]: With dead ends: 180 [2023-12-02 13:18:12,406 INFO L226 Difference]: Without dead ends: 178 [2023-12-02 13:18:12,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 257 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 47.4s TimeCoverageRelationStatistics Valid=268, Invalid=1894, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 13:18:12,408 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:18:12,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 413 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 13:18:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-02 13:18:12,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 163. [2023-12-02 13:18:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 151 states have internal predecessors, (152), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 13:18:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 170 transitions. [2023-12-02 13:18:12,433 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 170 transitions. Word has length 150 [2023-12-02 13:18:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:18:12,433 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 170 transitions. [2023-12-02 13:18:12,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.0625) internal successors, (129), 19 states have internal predecessors, (129), 8 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 13:18:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 170 transitions. [2023-12-02 13:18:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-02 13:18:12,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:18:12,435 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:18:12,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 13:18:12,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:18:12,636 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:18:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:18:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash -290486233, now seen corresponding path program 7 times [2023-12-02 13:18:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:18:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993695668] [2023-12-02 13:18:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:18:12,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:18:12,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:18:12,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99396021] [2023-12-02 13:18:12,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 13:18:12,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:18:12,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:18:12,648 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:18:12,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 13:18:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:18:14,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-02 13:18:14,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:18:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 463 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-02 13:18:16,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:18:20,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:18:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993695668] [2023-12-02 13:18:20,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:18:20,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99396021] [2023-12-02 13:18:20,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99396021] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:18:20,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [122795727] [2023-12-02 13:18:20,301 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-12-02 13:18:20,301 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:18:20,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:18:20,301 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:18:20,302 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:18:21,359 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2023-12-02 13:18:21,365 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2023-12-02 13:18:21,389 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:19:49,344 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9572#(and (<= 2 |ULTIMATE.start_main_~c~0#1|) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y~0#1_147| Int) (|v_ULTIMATE.start_main_~x~0#1_175| Int)) (and (= (* |v_ULTIMATE.start_main_~y~0#1_147| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~y~0#1|) (<= (* |v_ULTIMATE.start_main_~x~0#1_175| |ULTIMATE.start_main_~z~0#1|) 9223372036854775806) (= |ULTIMATE.start_main_~x~0#1| (+ (* |v_ULTIMATE.start_main_~x~0#1_175| |ULTIMATE.start_main_~z~0#1|) 1)) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_147| |ULTIMATE.start_main_~z~0#1|) |v_ULTIMATE.start_main_~x~0#1_175|) (+ (* |v_ULTIMATE.start_main_~x~0#1_175| |ULTIMATE.start_main_~z~0#1|) 1)))) (<= |ULTIMATE.start_main_~z~0#1| 20) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|)) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 20))' at error location [2023-12-02 13:19:49,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:19:49,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:19:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-12-02 13:19:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553651085] [2023-12-02 13:19:49,344 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 13:19:49,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 13:19:49,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:19:49,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 13:19:49,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2561, Unknown=6, NotChecked=0, Total=2970 [2023-12-02 13:19:49,347 INFO L87 Difference]: Start difference. First operand 163 states and 170 transitions. Second operand has 21 states, 18 states have (on average 8.277777777777779) internal successors, (149), 21 states have internal predecessors, (149), 9 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 13:19:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:51,847 INFO L93 Difference]: Finished difference Result 201 states and 210 transitions. [2023-12-02 13:19:51,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 13:19:51,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.277777777777779) internal successors, (149), 21 states have internal predecessors, (149), 9 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Word has length 173 [2023-12-02 13:19:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:51,849 INFO L225 Difference]: With dead ends: 201 [2023-12-02 13:19:51,849 INFO L226 Difference]: Without dead ends: 199 [2023-12-02 13:19:51,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 343 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 91.4s TimeCoverageRelationStatistics Valid=403, Invalid=2561, Unknown=6, NotChecked=0, Total=2970 [2023-12-02 13:19:51,850 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 70 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:51,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 593 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 13:19:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-02 13:19:51,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 184. [2023-12-02 13:19:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 170 states have (on average 1.011764705882353) internal successors, (172), 171 states have internal predecessors, (172), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 13:19:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 192 transitions. [2023-12-02 13:19:51,880 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 192 transitions. Word has length 173 [2023-12-02 13:19:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:51,881 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 192 transitions. [2023-12-02 13:19:51,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.277777777777779) internal successors, (149), 21 states have internal predecessors, (149), 9 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 13:19:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 192 transitions. [2023-12-02 13:19:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-02 13:19:51,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:51,882 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:51,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 13:19:52,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:19:52,083 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-12-02 13:19:52,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash -69175728, now seen corresponding path program 8 times [2023-12-02 13:19:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:19:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329811360] [2023-12-02 13:19:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:52,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:19:52,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:19:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680358153] [2023-12-02 13:19:52,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:19:52,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:19:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:19:52,096 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:19:52,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abbb2c5c-dc20-4e96-8a9a-9acfe284c42c/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process