./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.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_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/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_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/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_158230dd-5e8d-4cbc-a20a-06ab81e16327/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 9cf0abd1bd1b4ed3cb492af2ceaa5e063719310ace8aba62ab225fe204180938 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:35:30,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:35:30,408 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-12-02 15:35:30,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:35:30,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:35:30,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:35:30,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:35:30,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:35:30,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:35:30,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:35:30,438 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:35:30,439 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:35:30,439 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:35:30,440 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:35:30,440 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:35:30,441 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:35:30,441 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:35:30,442 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:35:30,442 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:35:30,443 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:35:30,443 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:35:30,444 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:35:30,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:35:30,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:35:30,446 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:35:30,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:35:30,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:35:30,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:35:30,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:35:30,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:35:30,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:35:30,448 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:35:30,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:35:30,449 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:35:30,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:35:30,449 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:35:30,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:35:30,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:35:30,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:35:30,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:35:30,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:35:30,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:35:30,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:35:30,451 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:35:30,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:35:30,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:35:30,451 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:35:30,451 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:35:30,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:35:30,452 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_158230dd-5e8d-4cbc-a20a-06ab81e16327/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cf0abd1bd1b4ed3cb492af2ceaa5e063719310ace8aba62ab225fe204180938 [2023-12-02 15:35:30,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:35:30,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:35:30,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:35:30,701 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:35:30,701 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:35:30,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2023-12-02 15:35:33,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:35:33,645 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:35:33,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2023-12-02 15:35:33,654 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/data/5580fcd18/8449ebb2d07a499ab21652794b379482/FLAGec1686607 [2023-12-02 15:35:33,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/data/5580fcd18/8449ebb2d07a499ab21652794b379482 [2023-12-02 15:35:33,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:35:33,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:35:33,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:35:33,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:35:33,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:35:33,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:33,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be6dcae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33, skipping insertion in model container [2023-12-02 15:35:33,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:33,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:35:33,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:35:33,899 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:35:33,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:35:33,949 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:35:33,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33 WrapperNode [2023-12-02 15:35:33,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:35:33,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:35:33,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:35:33,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:35:33,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:33,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:33,989 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 107 [2023-12-02 15:35:33,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:35:33,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:35:33,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:35:33,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:35:34,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:35:34,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:35:34,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:35:34,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:35:34,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (1/1) ... [2023-12-02 15:35:34,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:35:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:34,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:35:34,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:35:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:35:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:35:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:35:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:35:34,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 15:35:34,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 15:35:34,133 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:35:34,134 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:35:34,393 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:35:34,438 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:35:34,439 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 15:35:34,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:34 BoogieIcfgContainer [2023-12-02 15:35:34,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:35:34,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:35:34,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:35:34,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:35:34,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:35:33" (1/3) ... [2023-12-02 15:35:34,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1697c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:34, skipping insertion in model container [2023-12-02 15:35:34,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:33" (2/3) ... [2023-12-02 15:35:34,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1697c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:34, skipping insertion in model container [2023-12-02 15:35:34,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:34" (3/3) ... [2023-12-02 15:35:34,450 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound50.c [2023-12-02 15:35:34,471 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:35:34,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-12-02 15:35:34,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:35:34,526 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;@cb6bc86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:35:34,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-12-02 15:35:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 15:35:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:35:34,537 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:34,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:35:34,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:34,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash 184961, now seen corresponding path program 1 times [2023-12-02 15:35:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:34,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146134633] [2023-12-02 15:35:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:34,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:35:34,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146134633] [2023-12-02 15:35:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146134633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:34,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:34,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:35:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002374752] [2023-12-02 15:35:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:34,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:35:34,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:34,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:35:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:34,790 INFO L87 Difference]: Start difference. First operand has 86 states, 43 states have (on average 1.930232558139535) internal successors, (83), 77 states have internal predecessors, (83), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:35:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:34,873 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2023-12-02 15:35:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:35:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 15:35:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:34,883 INFO L225 Difference]: With dead ends: 175 [2023-12-02 15:35:34,883 INFO L226 Difference]: Without dead ends: 87 [2023-12-02 15:35:34,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:35:34,890 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:34,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 260 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:35:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-02 15:35:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-02 15:35:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 46 states have (on average 1.8043478260869565) internal successors, (83), 79 states have internal predecessors, (83), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:35:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2023-12-02 15:35:34,928 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 3 [2023-12-02 15:35:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:34,929 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2023-12-02 15:35:34,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:35:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2023-12-02 15:35:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:35:34,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:34,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 15:35:34,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:35:34,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:34,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1215253681, now seen corresponding path program 1 times [2023-12-02 15:35:34,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:34,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736395101] [2023-12-02 15:35:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:34,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:34,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:34,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1901751375] [2023-12-02 15:35:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:34,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:34,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:34,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:34,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:35:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:34,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:35:35,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:35:35,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:35,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:35,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736395101] [2023-12-02 15:35:35,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:35,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901751375] [2023-12-02 15:35:35,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901751375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:35,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:35,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:35:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942008504] [2023-12-02 15:35:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:35:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:35:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:35,063 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:35:35,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:35,178 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2023-12-02 15:35:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:35:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:35:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:35,181 INFO L225 Difference]: With dead ends: 87 [2023-12-02 15:35:35,181 INFO L226 Difference]: Without dead ends: 82 [2023-12-02 15:35:35,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 15:35:35,183 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 66 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:35,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 46 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-02 15:35:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-02 15:35:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 46 states have (on average 1.6956521739130435) internal successors, (78), 74 states have internal predecessors, (78), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:35:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2023-12-02 15:35:35,197 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 6 [2023-12-02 15:35:35,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:35,197 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2023-12-02 15:35:35,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:35:35,198 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2023-12-02 15:35:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:35:35,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:35,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:35,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:35:35,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:35,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:35,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -981841496, now seen corresponding path program 1 times [2023-12-02 15:35:35,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:35,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135711529] [2023-12-02 15:35:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:35,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:35,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:35,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015081940] [2023-12-02 15:35:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:35,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:35,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:35,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:35,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:35:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:35,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:35:35,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:35:35,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:35,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135711529] [2023-12-02 15:35:35,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:35,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015081940] [2023-12-02 15:35:35,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015081940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:35,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:35,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:35:35,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386636690] [2023-12-02 15:35:35,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:35,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:35:35,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:35:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:35,508 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:35:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:35,593 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2023-12-02 15:35:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:35:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:35:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:35,595 INFO L225 Difference]: With dead ends: 104 [2023-12-02 15:35:35,595 INFO L226 Difference]: Without dead ends: 103 [2023-12-02 15:35:35,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 15:35:35,597 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:35,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 105 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-02 15:35:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2023-12-02 15:35:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 76 states have internal predecessors, (80), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:35:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2023-12-02 15:35:35,611 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 7 [2023-12-02 15:35:35,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:35,612 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2023-12-02 15:35:35,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:35:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2023-12-02 15:35:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 15:35:35,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:35,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:35,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:35:35,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:35,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:35,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2034502159, now seen corresponding path program 1 times [2023-12-02 15:35:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843419618] [2023-12-02 15:35:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:35,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:35,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277416935] [2023-12-02 15:35:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:35,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:35,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:35,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:35,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:35:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:35,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:35:35,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:35:35,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:35,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:35,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843419618] [2023-12-02 15:35:35,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277416935] [2023-12-02 15:35:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277416935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:35,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:35,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:35:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334037847] [2023-12-02 15:35:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:35,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:35:35,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:35,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:35:35,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:35,951 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:36,057 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2023-12-02 15:35:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:35:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-02 15:35:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:36,060 INFO L225 Difference]: With dead ends: 150 [2023-12-02 15:35:36,060 INFO L226 Difference]: Without dead ends: 147 [2023-12-02 15:35:36,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:36,062 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 58 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:36,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 90 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:36,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-02 15:35:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 117. [2023-12-02 15:35:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 75 states have (on average 1.68) internal successors, (126), 103 states have internal predecessors, (126), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:35:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2023-12-02 15:35:36,077 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 11 [2023-12-02 15:35:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:36,078 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2023-12-02 15:35:36,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2023-12-02 15:35:36,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 15:35:36,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:36,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:36,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:35:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:36,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:36,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1354942573, now seen corresponding path program 1 times [2023-12-02 15:35:36,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:36,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395344719] [2023-12-02 15:35:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:36,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:36,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465558936] [2023-12-02 15:35:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:36,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:36,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:36,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:36,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:35:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:36,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:35:36,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:35:36,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:36,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395344719] [2023-12-02 15:35:36,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465558936] [2023-12-02 15:35:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465558936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:36,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:36,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:35:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424306872] [2023-12-02 15:35:36,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:36,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:35:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:36,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:35:36,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:36,402 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:36,503 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2023-12-02 15:35:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:35:36,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-12-02 15:35:36,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:36,505 INFO L225 Difference]: With dead ends: 147 [2023-12-02 15:35:36,505 INFO L226 Difference]: Without dead ends: 144 [2023-12-02 15:35:36,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 15:35:36,507 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:36,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 93 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-02 15:35:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2023-12-02 15:35:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 76 states have (on average 1.644736842105263) internal successors, (125), 104 states have internal predecessors, (125), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:35:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 149 transitions. [2023-12-02 15:35:36,522 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 149 transitions. Word has length 12 [2023-12-02 15:35:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:36,522 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 149 transitions. [2023-12-02 15:35:36,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 149 transitions. [2023-12-02 15:35:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 15:35:36,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:36,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:36,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 15:35:36,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:36,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:36,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash -946453133, now seen corresponding path program 1 times [2023-12-02 15:35:36,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:36,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193797097] [2023-12-02 15:35:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:36,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:36,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434678725] [2023-12-02 15:35:36,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:36,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:36,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:36,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:36,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:35:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:36,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:35:36,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:35:36,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:36,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193797097] [2023-12-02 15:35:36,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434678725] [2023-12-02 15:35:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434678725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:36,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:36,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:35:36,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902317927] [2023-12-02 15:35:36,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:35:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:35:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:36,842 INFO L87 Difference]: Start difference. First operand 118 states and 149 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:36,916 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2023-12-02 15:35:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:35:36,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-02 15:35:36,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:36,918 INFO L225 Difference]: With dead ends: 140 [2023-12-02 15:35:36,918 INFO L226 Difference]: Without dead ends: 137 [2023-12-02 15:35:36,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 15:35:36,920 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:36,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 111 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-12-02 15:35:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2023-12-02 15:35:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 105 states have internal predecessors, (124), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:35:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2023-12-02 15:35:36,937 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 13 [2023-12-02 15:35:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:36,937 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2023-12-02 15:35:36,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2023-12-02 15:35:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 15:35:36,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:36,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:36,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:35:37,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:37,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:37,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash 724724015, now seen corresponding path program 1 times [2023-12-02 15:35:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246360288] [2023-12-02 15:35:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:37,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:37,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323086958] [2023-12-02 15:35:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:37,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:37,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:37,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:37,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:35:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:37,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:35:37,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:35:37,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:37,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:37,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246360288] [2023-12-02 15:35:37,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:37,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323086958] [2023-12-02 15:35:37,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323086958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:37,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:37,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:35:37,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728837920] [2023-12-02 15:35:37,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:37,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:35:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:35:37,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:37,268 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:37,346 INFO L93 Difference]: Finished difference Result 137 states and 153 transitions. [2023-12-02 15:35:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:35:37,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-02 15:35:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:37,348 INFO L225 Difference]: With dead ends: 137 [2023-12-02 15:35:37,348 INFO L226 Difference]: Without dead ends: 130 [2023-12-02 15:35:37,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 15:35:37,350 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:37,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 114 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-02 15:35:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 116. [2023-12-02 15:35:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 102 states have internal predecessors, (118), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:35:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-12-02 15:35:37,366 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 14 [2023-12-02 15:35:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:37,366 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-12-02 15:35:37,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:35:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-12-02 15:35:37,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 15:35:37,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:37,367 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:37,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:35:37,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:37,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:37,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash -850449246, now seen corresponding path program 1 times [2023-12-02 15:35:37,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:37,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681611101] [2023-12-02 15:35:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:37,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:37,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:37,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368419183] [2023-12-02 15:35:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:37,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:37,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:37,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:37,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:35:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:37,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:35:37,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:37,674 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 15:35:37,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:37,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681611101] [2023-12-02 15:35:37,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368419183] [2023-12-02 15:35:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368419183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:37,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:37,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:35:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741040455] [2023-12-02 15:35:37,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:37,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:35:37,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:37,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:35:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:35:37,677 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:35:37,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:37,733 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2023-12-02 15:35:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:35:37,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-02 15:35:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:37,735 INFO L225 Difference]: With dead ends: 116 [2023-12-02 15:35:37,735 INFO L226 Difference]: Without dead ends: 114 [2023-12-02 15:35:37,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:35:37,736 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 75 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:37,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 210 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:35:37,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-02 15:35:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-02 15:35:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 74 states have (on average 1.554054054054054) internal successors, (115), 100 states have internal predecessors, (115), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:35:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2023-12-02 15:35:37,748 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 20 [2023-12-02 15:35:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:37,748 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2023-12-02 15:35:37,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:35:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2023-12-02 15:35:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 15:35:37,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:37,749 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:37,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 15:35:37,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:37,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:37,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash -594122769, now seen corresponding path program 1 times [2023-12-02 15:35:37,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:37,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168245856] [2023-12-02 15:35:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:37,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:37,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029731348] [2023-12-02 15:35:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:37,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:37,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:37,963 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:37,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:35:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:38,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:35:38,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:38,056 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 15:35:38,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:38,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:38,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168245856] [2023-12-02 15:35:38,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:38,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029731348] [2023-12-02 15:35:38,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029731348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:38,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:38,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:35:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883488827] [2023-12-02 15:35:38,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:38,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:35:38,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:38,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:35:38,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:35:38,058 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:35:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:38,130 INFO L93 Difference]: Finished difference Result 195 states and 229 transitions. [2023-12-02 15:35:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:35:38,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-12-02 15:35:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:38,132 INFO L225 Difference]: With dead ends: 195 [2023-12-02 15:35:38,132 INFO L226 Difference]: Without dead ends: 120 [2023-12-02 15:35:38,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:35:38,134 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 8 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:38,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 302 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:35:38,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-12-02 15:35:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-12-02 15:35:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.518987341772152) internal successors, (120), 105 states have internal predecessors, (120), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 15:35:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2023-12-02 15:35:38,145 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 21 [2023-12-02 15:35:38,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:38,145 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2023-12-02 15:35:38,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:35:38,145 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2023-12-02 15:35:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 15:35:38,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:38,146 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:38,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:35:38,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:38,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:38,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash 48901001, now seen corresponding path program 1 times [2023-12-02 15:35:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:38,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310651440] [2023-12-02 15:35:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:38,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:38,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735152737] [2023-12-02 15:35:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:38,360 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:38,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:35:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:38,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:35:38,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:38,448 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 15:35:38,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:38,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:38,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310651440] [2023-12-02 15:35:38,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:38,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735152737] [2023-12-02 15:35:38,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735152737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:38,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:35:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006635064] [2023-12-02 15:35:38,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:38,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:35:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:35:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:38,451 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:35:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:38,582 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2023-12-02 15:35:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:35:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-12-02 15:35:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:38,586 INFO L225 Difference]: With dead ends: 208 [2023-12-02 15:35:38,586 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 15:35:38,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:38,588 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 158 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:38,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 83 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 15:35:38,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 172. [2023-12-02 15:35:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 149 states have internal predecessors, (184), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:35:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2023-12-02 15:35:38,602 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 24 [2023-12-02 15:35:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:38,602 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2023-12-02 15:35:38,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:35:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2023-12-02 15:35:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 15:35:38,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:38,604 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:38,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:35:38,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 15:35:38,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:38,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:38,809 INFO L85 PathProgramCache]: Analyzing trace with hash -401856115, now seen corresponding path program 1 times [2023-12-02 15:35:38,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:38,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25190109] [2023-12-02 15:35:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:38,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:38,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:38,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921103022] [2023-12-02 15:35:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:38,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:38,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:38,820 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:38,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:35:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:38,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:35:38,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:38,911 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:38,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25190109] [2023-12-02 15:35:38,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921103022] [2023-12-02 15:35:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921103022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:38,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:38,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:35:38,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573230687] [2023-12-02 15:35:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:38,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:35:38,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:38,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:35:38,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:38,913 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:39,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:39,004 INFO L93 Difference]: Finished difference Result 172 states and 224 transitions. [2023-12-02 15:35:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:35:39,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-12-02 15:35:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:39,006 INFO L225 Difference]: With dead ends: 172 [2023-12-02 15:35:39,007 INFO L226 Difference]: Without dead ends: 170 [2023-12-02 15:35:39,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:35:39,008 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 114 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:39,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 61 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-02 15:35:39,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-02 15:35:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 123 states have (on average 1.4471544715447155) internal successors, (178), 147 states have internal predecessors, (178), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:35:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-12-02 15:35:39,019 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 38 [2023-12-02 15:35:39,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:39,020 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-12-02 15:35:39,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-12-02 15:35:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 15:35:39,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:39,021 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:39,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:35:39,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 15:35:39,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:39,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash 427362428, now seen corresponding path program 1 times [2023-12-02 15:35:39,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:39,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679199061] [2023-12-02 15:35:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:39,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:39,232 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218830292] [2023-12-02 15:35:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:39,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:39,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:39,233 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:39,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:35:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:39,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:35:39,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:39,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:39,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:39,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679199061] [2023-12-02 15:35:39,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:39,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218830292] [2023-12-02 15:35:39,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218830292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:39,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:39,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:35:39,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122704739] [2023-12-02 15:35:39,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:39,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:35:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:39,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:35:39,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:39,322 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:39,399 INFO L93 Difference]: Finished difference Result 215 states and 259 transitions. [2023-12-02 15:35:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:35:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-12-02 15:35:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:39,401 INFO L225 Difference]: With dead ends: 215 [2023-12-02 15:35:39,401 INFO L226 Difference]: Without dead ends: 213 [2023-12-02 15:35:39,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:35:39,402 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 105 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:39,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 191 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:39,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-02 15:35:39,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 170. [2023-12-02 15:35:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 147 states have internal predecessors, (176), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:35:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 216 transitions. [2023-12-02 15:35:39,416 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 216 transitions. Word has length 39 [2023-12-02 15:35:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 216 transitions. [2023-12-02 15:35:39,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 216 transitions. [2023-12-02 15:35:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 15:35:39,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:39,418 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:39,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:35:39,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:35:39,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:39,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1621563628, now seen corresponding path program 1 times [2023-12-02 15:35:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910173799] [2023-12-02 15:35:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:39,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:39,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205304768] [2023-12-02 15:35:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:39,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:39,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:39,630 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:35:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:39,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:35:39,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:39,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:39,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:39,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910173799] [2023-12-02 15:35:39,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:39,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205304768] [2023-12-02 15:35:39,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205304768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:39,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:39,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:35:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679367592] [2023-12-02 15:35:39,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:39,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:35:39,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:39,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:35:39,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:35:39,710 INFO L87 Difference]: Start difference. First operand 170 states and 216 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:39,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:39,759 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2023-12-02 15:35:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:35:39,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2023-12-02 15:35:39,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:39,762 INFO L225 Difference]: With dead ends: 183 [2023-12-02 15:35:39,762 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 15:35:39,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 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 15:35:39,763 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 19 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:39,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:35:39,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 15:35:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2023-12-02 15:35:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 123 states have (on average 1.4227642276422765) internal successors, (175), 147 states have internal predecessors, (175), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:35:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2023-12-02 15:35:39,774 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 41 [2023-12-02 15:35:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:39,775 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2023-12-02 15:35:39,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2023-12-02 15:35:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 15:35:39,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:39,776 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:39,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:35:39,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:39,981 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:39,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:39,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1271136500, now seen corresponding path program 1 times [2023-12-02 15:35:39,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:39,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659545681] [2023-12-02 15:35:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:39,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:39,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578479853] [2023-12-02 15:35:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:39,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:39,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:39,990 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:39,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:35:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:40,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:35:40,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:40,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:40,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:40,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659545681] [2023-12-02 15:35:40,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:40,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578479853] [2023-12-02 15:35:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578479853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:40,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:40,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:35:40,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419372684] [2023-12-02 15:35:40,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:40,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:35:40,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:40,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:35:40,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:35:40,133 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:40,386 INFO L93 Difference]: Finished difference Result 250 states and 297 transitions. [2023-12-02 15:35:40,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:35:40,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-12-02 15:35:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:40,389 INFO L225 Difference]: With dead ends: 250 [2023-12-02 15:35:40,389 INFO L226 Difference]: Without dead ends: 249 [2023-12-02 15:35:40,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:35:40,390 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 152 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:40,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 237 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:35:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-02 15:35:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 205. [2023-12-02 15:35:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 153 states have (on average 1.4379084967320261) internal successors, (220), 177 states have internal predecessors, (220), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:35:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 270 transitions. [2023-12-02 15:35:40,408 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 270 transitions. Word has length 42 [2023-12-02 15:35:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:40,408 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 270 transitions. [2023-12-02 15:35:40,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 270 transitions. [2023-12-02 15:35:40,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 15:35:40,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:40,410 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:40,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:35:40,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:40,613 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:40,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1271135218, now seen corresponding path program 1 times [2023-12-02 15:35:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735462875] [2023-12-02 15:35:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:40,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:40,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:40,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188505527] [2023-12-02 15:35:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:40,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:40,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:35:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:40,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:35:40,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:40,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:40,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735462875] [2023-12-02 15:35:40,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:40,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188505527] [2023-12-02 15:35:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188505527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:40,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:35:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831058619] [2023-12-02 15:35:40,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:35:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:40,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:35:40,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:40,779 INFO L87 Difference]: Start difference. First operand 205 states and 270 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:40,863 INFO L93 Difference]: Finished difference Result 205 states and 270 transitions. [2023-12-02 15:35:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:35:40,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-12-02 15:35:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:40,865 INFO L225 Difference]: With dead ends: 205 [2023-12-02 15:35:40,865 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 15:35:40,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:35:40,866 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 106 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:40,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 59 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 15:35:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-12-02 15:35:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 153 states have (on average 1.4183006535947713) internal successors, (217), 176 states have internal predecessors, (217), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:35:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 267 transitions. [2023-12-02 15:35:40,882 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 267 transitions. Word has length 42 [2023-12-02 15:35:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:40,883 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 267 transitions. [2023-12-02 15:35:40,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:40,883 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 267 transitions. [2023-12-02 15:35:40,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 15:35:40,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:40,884 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:40,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 15:35:41,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 15:35:41,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:41,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 750486230, now seen corresponding path program 1 times [2023-12-02 15:35:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:41,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529258829] [2023-12-02 15:35:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:41,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:41,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462320715] [2023-12-02 15:35:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:41,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:41,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:41,097 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:41,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:35:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:41,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:35:41,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:41,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:41,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:41,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529258829] [2023-12-02 15:35:41,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:41,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462320715] [2023-12-02 15:35:41,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462320715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:41,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:41,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:35:41,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189675821] [2023-12-02 15:35:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:41,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:35:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:41,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:35:41,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:41,217 INFO L87 Difference]: Start difference. First operand 204 states and 267 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:41,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:41,277 INFO L93 Difference]: Finished difference Result 204 states and 267 transitions. [2023-12-02 15:35:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:35:41,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2023-12-02 15:35:41,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:41,280 INFO L225 Difference]: With dead ends: 204 [2023-12-02 15:35:41,280 INFO L226 Difference]: Without dead ends: 203 [2023-12-02 15:35:41,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 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 15:35:41,281 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 48 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:41,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 71 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:35:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-02 15:35:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-12-02 15:35:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 153 states have (on average 1.3986928104575163) internal successors, (214), 175 states have internal predecessors, (214), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:35:41,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 264 transitions. [2023-12-02 15:35:41,297 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 264 transitions. Word has length 43 [2023-12-02 15:35:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:41,298 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 264 transitions. [2023-12-02 15:35:41,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 264 transitions. [2023-12-02 15:35:41,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 15:35:41,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:41,299 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:41,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 15:35:41,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 15:35:41,501 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:41,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1790236788, now seen corresponding path program 1 times [2023-12-02 15:35:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:41,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365593850] [2023-12-02 15:35:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:41,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:41,506 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:41,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944049785] [2023-12-02 15:35:41,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:41,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:41,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:41,508 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:41,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 15:35:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:41,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:35:41,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:41,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:35:41,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:41,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365593850] [2023-12-02 15:35:41,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:41,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944049785] [2023-12-02 15:35:41,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944049785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:41,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:35:41,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:35:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379490180] [2023-12-02 15:35:41,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:35:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:35:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:35:41,621 INFO L87 Difference]: Start difference. First operand 203 states and 264 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:41,723 INFO L93 Difference]: Finished difference Result 219 states and 275 transitions. [2023-12-02 15:35:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:35:41,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2023-12-02 15:35:41,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:41,725 INFO L225 Difference]: With dead ends: 219 [2023-12-02 15:35:41,725 INFO L226 Difference]: Without dead ends: 218 [2023-12-02 15:35:41,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 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 15:35:41,726 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 50 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:41,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 146 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:35:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-02 15:35:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 207. [2023-12-02 15:35:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 157 states have (on average 1.3885350318471337) internal successors, (218), 179 states have internal predecessors, (218), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:35:41,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 268 transitions. [2023-12-02 15:35:41,742 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 268 transitions. Word has length 44 [2023-12-02 15:35:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:41,742 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 268 transitions. [2023-12-02 15:35:41,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 268 transitions. [2023-12-02 15:35:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 15:35:41,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:41,744 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:41,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 15:35:41,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 15:35:41,944 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:41,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1959686662, now seen corresponding path program 1 times [2023-12-02 15:35:41,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:41,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677978469] [2023-12-02 15:35:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:41,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:41,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:41,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762012897] [2023-12-02 15:35:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:41,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:41,952 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:41,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:35:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:41,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:35:41,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 15:35:42,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:35:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:35:42,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:42,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677978469] [2023-12-02 15:35:42,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:42,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762012897] [2023-12-02 15:35:42,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762012897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:35:42,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [831163918] [2023-12-02 15:35:42,196 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 15:35:42,196 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:35:42,199 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:35:42,203 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:35:42,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:35:48,353 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-12-02 15:35:48,354 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:35:52,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [831163918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:35:52,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:35:52,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 7] total 25 [2023-12-02 15:35:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144485912] [2023-12-02 15:35:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:35:52,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:35:52,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:35:52,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:35:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2023-12-02 15:35:52,039 INFO L87 Difference]: Start difference. First operand 207 states and 268 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:35:53,339 INFO L93 Difference]: Finished difference Result 369 states and 478 transitions. [2023-12-02 15:35:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:35:53,340 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2023-12-02 15:35:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:35:53,341 INFO L225 Difference]: With dead ends: 369 [2023-12-02 15:35:53,341 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 15:35:53,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 94 SyntacticMatches, 21 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-12-02 15:35:53,343 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:35:53,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 147 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 15:35:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 15:35:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 208. [2023-12-02 15:35:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 156 states have (on average 1.294871794871795) internal successors, (202), 179 states have internal predecessors, (202), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 15:35:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 254 transitions. [2023-12-02 15:35:53,359 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 254 transitions. Word has length 47 [2023-12-02 15:35:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:35:53,360 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 254 transitions. [2023-12-02 15:35:53,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:35:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 254 transitions. [2023-12-02 15:35:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 15:35:53,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:35:53,361 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:35:53,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:35:53,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 15:35:53,561 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:35:53,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:35:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash 368831322, now seen corresponding path program 1 times [2023-12-02 15:35:53,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:35:53,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381356098] [2023-12-02 15:35:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:35:53,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:35:53,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089742852] [2023-12-02 15:35:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:35:53,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:35:53,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:35:53,570 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:35:53,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:35:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:35:53,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:35:53,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:35:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 15:35:53,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:35:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:35:53,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:35:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381356098] [2023-12-02 15:35:53,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:35:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089742852] [2023-12-02 15:35:53,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089742852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:35:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [686837480] [2023-12-02 15:35:53,802 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 15:35:53,802 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:35:53,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:35:53,803 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:35:53,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:35:58,297 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:35:58,300 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:36:04,898 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8877#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~r~0#1|) (= ~counter~0 |ULTIMATE.start_main_#t~post7#1|) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2))) (<= (+ (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2) 1) 0) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))' at error location [2023-12-02 15:36:04,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:36:04,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:36:04,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-12-02 15:36:04,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996710795] [2023-12-02 15:36:04,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:36:04,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:36:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:36:04,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:36:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2023-12-02 15:36:04,901 INFO L87 Difference]: Start difference. First operand 208 states and 254 transitions. Second operand has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 15:36:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:36:05,213 INFO L93 Difference]: Finished difference Result 514 states and 614 transitions. [2023-12-02 15:36:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 15:36:05,214 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 54 [2023-12-02 15:36:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:36:05,218 INFO L225 Difference]: With dead ends: 514 [2023-12-02 15:36:05,218 INFO L226 Difference]: Without dead ends: 411 [2023-12-02 15:36:05,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 111 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 15:36:05,220 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 152 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:36:05,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 442 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:36:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-02 15:36:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 358. [2023-12-02 15:36:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 280 states have (on average 1.2714285714285714) internal successors, (356), 304 states have internal predecessors, (356), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 15:36:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 448 transitions. [2023-12-02 15:36:05,253 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 448 transitions. Word has length 54 [2023-12-02 15:36:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:36:05,254 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 448 transitions. [2023-12-02 15:36:05,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-02 15:36:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 448 transitions. [2023-12-02 15:36:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 15:36:05,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:05,255 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:36:05,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 15:36:05,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:05,455 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:36:05,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1327655998, now seen corresponding path program 1 times [2023-12-02 15:36:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:36:05,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608242117] [2023-12-02 15:36:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:36:05,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:36:05,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171158063] [2023-12-02 15:36:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:05,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:05,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:36:05,464 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:36:05,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 15:36:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:36:05,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:36:05,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-02 15:36:05,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:36:05,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:36:05,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608242117] [2023-12-02 15:36:05,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:36:05,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171158063] [2023-12-02 15:36:05,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171158063] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:36:05,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [528968038] [2023-12-02 15:36:05,921 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 15:36:05,921 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:36:05,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:36:05,922 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:36:05,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:36:09,628 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:36:09,630 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:36:16,684 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10163#(and (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (exists ((|v_ULTIMATE.start_main_#t~post7#1_38| Int)) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (= ~counter~0 (+ |v_ULTIMATE.start_main_#t~post7#1_38| 1)) (<= 2 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= 0 (+ 4611686018427387903 (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2))) (<= (+ (div (* (- 1) |ULTIMATE.start_main_~b~0#1|) 2) 1) 0) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 3 ~counter~0) (<= |v_ULTIMATE.start_main_#t~post7#1_38| 49))))' at error location [2023-12-02 15:36:16,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:36:16,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:36:16,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-12-02 15:36:16,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083446869] [2023-12-02 15:36:16,684 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:36:16,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:36:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:36:16,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:36:16,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:36:16,685 INFO L87 Difference]: Start difference. First operand 358 states and 448 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:36:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:36:17,342 INFO L93 Difference]: Finished difference Result 508 states and 609 transitions. [2023-12-02 15:36:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:36:17,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 57 [2023-12-02 15:36:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:36:17,346 INFO L225 Difference]: With dead ends: 508 [2023-12-02 15:36:17,346 INFO L226 Difference]: Without dead ends: 504 [2023-12-02 15:36:17,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 81 SyntacticMatches, 20 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:36:17,347 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 224 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 15:36:17,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 190 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 15:36:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-02 15:36:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 384. [2023-12-02 15:36:17,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 302 states have (on average 1.271523178807947) internal successors, (384), 326 states have internal predecessors, (384), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 15:36:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 484 transitions. [2023-12-02 15:36:17,388 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 484 transitions. Word has length 57 [2023-12-02 15:36:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:36:17,388 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 484 transitions. [2023-12-02 15:36:17,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 15:36:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 484 transitions. [2023-12-02 15:36:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 15:36:17,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:17,390 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:36:17,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-02 15:36:17,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:17,591 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:36:17,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash -908417241, now seen corresponding path program 1 times [2023-12-02 15:36:17,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:36:17,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749511914] [2023-12-02 15:36:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:17,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:36:17,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:36:17,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551104483] [2023-12-02 15:36:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:17,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:17,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:36:17,598 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:36:17,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:36:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:36:17,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:36:17,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:36:17,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:36:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:36:17,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:36:17,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749511914] [2023-12-02 15:36:17,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:36:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551104483] [2023-12-02 15:36:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551104483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:36:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1048887353] [2023-12-02 15:36:17,796 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 15:36:17,796 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:36:17,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:36:17,797 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:36:17,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:36:21,508 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:36:21,509 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:36:28,922 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11672#(and (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= ~counter~0 50) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= 3 ~counter~0))' at error location [2023-12-02 15:36:28,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:36:28,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:36:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 15:36:28,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712769943] [2023-12-02 15:36:28,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:36:28,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:36:28,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:36:28,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:36:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:36:28,924 INFO L87 Difference]: Start difference. First operand 384 states and 484 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 15:36:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:36:29,120 INFO L93 Difference]: Finished difference Result 466 states and 571 transitions. [2023-12-02 15:36:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:36:29,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 72 [2023-12-02 15:36:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:36:29,122 INFO L225 Difference]: With dead ends: 466 [2023-12-02 15:36:29,123 INFO L226 Difference]: Without dead ends: 464 [2023-12-02 15:36:29,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 165 SyntacticMatches, 26 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2023-12-02 15:36:29,123 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 155 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:36:29,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 467 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:36:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-02 15:36:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 383. [2023-12-02 15:36:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 302 states have (on average 1.2516556291390728) internal successors, (378), 325 states have internal predecessors, (378), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 15:36:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 478 transitions. [2023-12-02 15:36:29,152 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 478 transitions. Word has length 72 [2023-12-02 15:36:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:36:29,152 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 478 transitions. [2023-12-02 15:36:29,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 15:36:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 478 transitions. [2023-12-02 15:36:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 15:36:29,153 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:29,154 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:36:29,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 15:36:29,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:29,354 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:36:29,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1110604033, now seen corresponding path program 1 times [2023-12-02 15:36:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:36:29,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105206055] [2023-12-02 15:36:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:29,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:36:29,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:36:29,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541796394] [2023-12-02 15:36:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:29,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:29,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:36:29,364 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:36:29,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:36:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:36:29,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:36:29,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:36:29,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:36:29,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:36:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105206055] [2023-12-02 15:36:29,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:36:29,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541796394] [2023-12-02 15:36:29,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541796394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:36:29,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:36:29,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:36:29,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87373816] [2023-12-02 15:36:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:36:29,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:36:29,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:36:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:36:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:36:29,458 INFO L87 Difference]: Start difference. First operand 383 states and 478 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:36:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:36:29,553 INFO L93 Difference]: Finished difference Result 390 states and 479 transitions. [2023-12-02 15:36:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:36:29,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2023-12-02 15:36:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:36:29,556 INFO L225 Difference]: With dead ends: 390 [2023-12-02 15:36:29,557 INFO L226 Difference]: Without dead ends: 389 [2023-12-02 15:36:29,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:36:29,557 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 22 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:36:29,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 212 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:36:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-02 15:36:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 381. [2023-12-02 15:36:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 301 states have (on average 1.2425249169435215) internal successors, (374), 323 states have internal predecessors, (374), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 15:36:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 474 transitions. [2023-12-02 15:36:29,588 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 474 transitions. Word has length 74 [2023-12-02 15:36:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:36:29,588 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 474 transitions. [2023-12-02 15:36:29,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 15:36:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 474 transitions. [2023-12-02 15:36:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 15:36:29,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:29,590 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 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 15:36:29,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:36:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:29,790 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:36:29,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1871532887, now seen corresponding path program 1 times [2023-12-02 15:36:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:36:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966141801] [2023-12-02 15:36:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:36:29,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:36:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023931657] [2023-12-02 15:36:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:29,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:36:29,800 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:36:29,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:36:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:36:29,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:36:29,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:36:29,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:36:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:36:30,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:36:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966141801] [2023-12-02 15:36:30,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:36:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023931657] [2023-12-02 15:36:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023931657] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:36:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362471244] [2023-12-02 15:36:30,085 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:36:30,085 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:36:30,085 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:36:30,085 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:36:30,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:36:34,138 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:36:34,139 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:36:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1362471244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:36:41,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:36:41,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [4, 4] total 25 [2023-12-02 15:36:41,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305783266] [2023-12-02 15:36:41,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:36:41,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 15:36:41,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:36:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 15:36:41,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-12-02 15:36:41,927 INFO L87 Difference]: Start difference. First operand 381 states and 474 transitions. Second operand has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 15:36:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:36:46,154 INFO L93 Difference]: Finished difference Result 392 states and 481 transitions. [2023-12-02 15:36:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 15:36:46,155 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 77 [2023-12-02 15:36:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:36:46,156 INFO L225 Difference]: With dead ends: 392 [2023-12-02 15:36:46,156 INFO L226 Difference]: Without dead ends: 389 [2023-12-02 15:36:46,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 176 SyntacticMatches, 29 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 15:36:46,158 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 40 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:36:46,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 97 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 15:36:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-02 15:36:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2023-12-02 15:36:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 305 states have (on average 1.222950819672131) internal successors, (373), 327 states have internal predecessors, (373), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-02 15:36:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 473 transitions. [2023-12-02 15:36:46,207 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 473 transitions. Word has length 77 [2023-12-02 15:36:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:36:46,207 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 473 transitions. [2023-12-02 15:36:46,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 15:36:46,207 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 473 transitions. [2023-12-02 15:36:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 15:36:46,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:36:46,208 INFO L195 NwaCegarLoop]: trace histogram [9, 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, 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 15:36:46,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 15:36:46,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:46,409 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:36:46,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:36:46,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1958903007, now seen corresponding path program 1 times [2023-12-02 15:36:46,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:36:46,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191560050] [2023-12-02 15:36:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:36:46,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:36:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301337793] [2023-12-02 15:36:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:36:46,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:36:46,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:36:46,418 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:36:46,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 15:36:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:36:46,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 15:36:46,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:36:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-02 15:36:46,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:36:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 15:36:46,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:36:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191560050] [2023-12-02 15:36:46,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:36:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301337793] [2023-12-02 15:36:46,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301337793] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:36:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1296575096] [2023-12-02 15:36:46,727 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 15:36:46,727 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:36:46,727 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:36:46,728 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:36:46,728 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:37:30,284 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:37:30,286 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:37:46,425 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15796#(and (exists ((|v_ULTIMATE.start_main_#t~post6#1_52| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= ~counter~0 51) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |v_ULTIMATE.start_main_#t~post6#1_52| 50) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ 4611686018427387903 |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~b~0#1|)))) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)) 0))' at error location [2023-12-02 15:37:46,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:37:46,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:37:46,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-12-02 15:37:46,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749326204] [2023-12-02 15:37:46,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:37:46,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:37:46,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:46,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:37:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2599, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 15:37:46,429 INFO L87 Difference]: Start difference. First operand 385 states and 473 transitions. Second operand has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 15:37:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:46,827 INFO L93 Difference]: Finished difference Result 629 states and 758 transitions. [2023-12-02 15:37:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-02 15:37:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 82 [2023-12-02 15:37:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:46,831 INFO L225 Difference]: With dead ends: 629 [2023-12-02 15:37:46,831 INFO L226 Difference]: Without dead ends: 503 [2023-12-02 15:37:46,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 183 SyntacticMatches, 8 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1992 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=572, Invalid=4398, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 15:37:46,833 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 143 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:46,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 648 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:37:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-02 15:37:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 439. [2023-12-02 15:37:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 350 states have (on average 1.2114285714285715) internal successors, (424), 374 states have internal predecessors, (424), 58 states have call successors, (58), 10 states have call predecessors, (58), 10 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 15:37:46,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 540 transitions. [2023-12-02 15:37:46,893 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 540 transitions. Word has length 82 [2023-12-02 15:37:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:46,893 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 540 transitions. [2023-12-02 15:37:46,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.277777777777778) internal successors, (113), 18 states have internal predecessors, (113), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-02 15:37:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 540 transitions. [2023-12-02 15:37:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 15:37:46,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:46,895 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2023-12-02 15:37:46,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 15:37:47,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 15:37:47,097 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:37:47,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1245996833, now seen corresponding path program 1 times [2023-12-02 15:37:47,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:47,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852322422] [2023-12-02 15:37:47,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:47,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:47,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:37:47,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125495205] [2023-12-02 15:37:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:47,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:47,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:47,108 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:47,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 15:37:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:47,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:37:47,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:37:47,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:37:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:37:47,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:47,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852322422] [2023-12-02 15:37:47,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:37:47,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125495205] [2023-12-02 15:37:47,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125495205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:37:47,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196052432] [2023-12-02 15:37:47,489 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:37:47,490 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:37:47,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:37:47,490 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:37:47,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:37:51,954 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-12-02 15:37:51,955 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:37:57,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1196052432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:57,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:37:57,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5] total 20 [2023-12-02 15:37:57,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547725677] [2023-12-02 15:37:57,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:57,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 15:37:57,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:57,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 15:37:57,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-12-02 15:37:57,325 INFO L87 Difference]: Start difference. First operand 439 states and 540 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:37:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:58,370 INFO L93 Difference]: Finished difference Result 454 states and 555 transitions. [2023-12-02 15:37:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 15:37:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 85 [2023-12-02 15:37:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:58,373 INFO L225 Difference]: With dead ends: 454 [2023-12-02 15:37:58,373 INFO L226 Difference]: Without dead ends: 453 [2023-12-02 15:37:58,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 193 SyntacticMatches, 41 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2023-12-02 15:37:58,374 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:58,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 120 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:37:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-12-02 15:37:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 438. [2023-12-02 15:37:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 350 states have (on average 1.2057142857142857) internal successors, (422), 373 states have internal predecessors, (422), 58 states have call successors, (58), 10 states have call predecessors, (58), 10 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 15:37:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 538 transitions. [2023-12-02 15:37:58,415 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 538 transitions. Word has length 85 [2023-12-02 15:37:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:58,415 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 538 transitions. [2023-12-02 15:37:58,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 15:37:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 538 transitions. [2023-12-02 15:37:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 15:37:58,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:58,417 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:37:58,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 15:37:58,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 15:37:58,620 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:37:58,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:58,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1927264933, now seen corresponding path program 1 times [2023-12-02 15:37:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:58,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112575541] [2023-12-02 15:37:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:58,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:58,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:37:58,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094769290] [2023-12-02 15:37:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:58,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:58,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:58,629 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:58,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:37:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:58,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:37:58,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:37:58,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:37:58,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:37:58,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112575541] [2023-12-02 15:37:58,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:37:58,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094769290] [2023-12-02 15:37:58,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094769290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:37:58,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:37:58,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 15:37:58,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730021140] [2023-12-02 15:37:58,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:37:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:37:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:37:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:37:58,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:37:58,967 INFO L87 Difference]: Start difference. First operand 438 states and 538 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 15:37:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:37:59,278 INFO L93 Difference]: Finished difference Result 577 states and 710 transitions. [2023-12-02 15:37:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:37:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 87 [2023-12-02 15:37:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:37:59,282 INFO L225 Difference]: With dead ends: 577 [2023-12-02 15:37:59,282 INFO L226 Difference]: Without dead ends: 574 [2023-12-02 15:37:59,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:37:59,283 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 208 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:37:59,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 263 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:37:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-12-02 15:37:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 435. [2023-12-02 15:37:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 350 states have (on average 1.1828571428571428) internal successors, (414), 370 states have internal predecessors, (414), 58 states have call successors, (58), 10 states have call predecessors, (58), 10 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 15:37:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 530 transitions. [2023-12-02 15:37:59,338 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 530 transitions. Word has length 87 [2023-12-02 15:37:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:37:59,339 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 530 transitions. [2023-12-02 15:37:59,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 15:37:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 530 transitions. [2023-12-02 15:37:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 15:37:59,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:37:59,340 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:37:59,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-02 15:37:59,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 15:37:59,546 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:37:59,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:37:59,547 INFO L85 PathProgramCache]: Analyzing trace with hash 384329283, now seen corresponding path program 1 times [2023-12-02 15:37:59,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:37:59,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610934534] [2023-12-02 15:37:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:59,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:37:59,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:37:59,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718108393] [2023-12-02 15:37:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:37:59,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:37:59,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:37:59,557 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:37:59,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 15:37:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:37:59,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:37:59,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:37:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:37:59,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:38:00,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:38:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610934534] [2023-12-02 15:38:00,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:38:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718108393] [2023-12-02 15:38:00,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718108393] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:38:00,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [552784817] [2023-12-02 15:38:00,037 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:38:00,037 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:38:00,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:38:00,038 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:38:00,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:38:46,209 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:38:46,210 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:39:03,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20536#(and (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= ~counter~0 50) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ 4611686018427387903 |ULTIMATE.start_main_~r~0#1|)) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~b~0#1|)) (<= 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 15:39:03,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:39:03,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:39:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 15:39:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906040014] [2023-12-02 15:39:03,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:39:03,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:39:03,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:39:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:39:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1641, Unknown=0, NotChecked=0, Total=1980 [2023-12-02 15:39:03,052 INFO L87 Difference]: Start difference. First operand 435 states and 530 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 15:39:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:39:03,602 INFO L93 Difference]: Finished difference Result 521 states and 626 transitions. [2023-12-02 15:39:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:39:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 88 [2023-12-02 15:39:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:39:03,605 INFO L225 Difference]: With dead ends: 521 [2023-12-02 15:39:03,605 INFO L226 Difference]: Without dead ends: 518 [2023-12-02 15:39:03,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 143 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=346, Invalid=1724, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 15:39:03,607 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 135 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:39:03,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 214 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:39:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2023-12-02 15:39:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 489. [2023-12-02 15:39:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 396 states have (on average 1.1893939393939394) internal successors, (471), 415 states have internal predecessors, (471), 66 states have call successors, (66), 10 states have call predecessors, (66), 10 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-02 15:39:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 603 transitions. [2023-12-02 15:39:03,653 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 603 transitions. Word has length 88 [2023-12-02 15:39:03,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:39:03,653 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 603 transitions. [2023-12-02 15:39:03,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-02 15:39:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 603 transitions. [2023-12-02 15:39:03,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 15:39:03,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:39:03,655 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:39:03,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 15:39:03,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 15:39:03,855 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:39:03,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:39:03,856 INFO L85 PathProgramCache]: Analyzing trace with hash -970694051, now seen corresponding path program 1 times [2023-12-02 15:39:03,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:39:03,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884116722] [2023-12-02 15:39:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:39:03,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:39:03,862 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:39:03,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102399437] [2023-12-02 15:39:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:39:03,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:39:03,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:39:03,863 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:39:03,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 15:39:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:39:03,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:39:03,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:39:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:39:03,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:39:03,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:39:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884116722] [2023-12-02 15:39:03,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:39:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102399437] [2023-12-02 15:39:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102399437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:39:03,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:39:03,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:39:03,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456778360] [2023-12-02 15:39:03,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:39:03,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 15:39:03,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:39:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 15:39:04,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:39:04,000 INFO L87 Difference]: Start difference. First operand 489 states and 603 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 15:39:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:39:04,427 INFO L93 Difference]: Finished difference Result 636 states and 775 transitions. [2023-12-02 15:39:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:39:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 89 [2023-12-02 15:39:04,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:39:04,431 INFO L225 Difference]: With dead ends: 636 [2023-12-02 15:39:04,431 INFO L226 Difference]: Without dead ends: 633 [2023-12-02 15:39:04,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:39:04,431 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 68 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:39:04,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 409 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:39:04,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-12-02 15:39:04,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 590. [2023-12-02 15:39:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 483 states have (on average 1.2070393374741202) internal successors, (583), 502 states have internal predecessors, (583), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 15:39:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 743 transitions. [2023-12-02 15:39:04,515 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 743 transitions. Word has length 89 [2023-12-02 15:39:04,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:39:04,516 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 743 transitions. [2023-12-02 15:39:04,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 15:39:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 743 transitions. [2023-12-02 15:39:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 15:39:04,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:39:04,517 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:39:04,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 15:39:04,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 15:39:04,720 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:39:04,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:39:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1838688727, now seen corresponding path program 2 times [2023-12-02 15:39:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:39:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729002777] [2023-12-02 15:39:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:39:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:39:04,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:39:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990633164] [2023-12-02 15:39:04,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:39:04,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:39:04,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:39:04,730 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:39:04,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 15:39:04,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:39:04,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:39:04,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 15:39:04,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:39:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-02 15:39:05,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:39:05,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:39:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729002777] [2023-12-02 15:39:05,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:39:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990633164] [2023-12-02 15:39:05,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990633164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:39:05,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1801298176] [2023-12-02 15:39:05,564 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-12-02 15:39:05,564 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:39:05,565 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:39:05,565 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:39:05,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:39:09,018 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-12-02 15:39:09,019 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:39:18,533 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23829#(and (exists ((|v_ULTIMATE.start_main_#t~post7#1_103| Int)) (and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |v_ULTIMATE.start_main_#t~post7#1_103| 49) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 2 |v_ULTIMATE.start_main_#t~post7#1_103|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~r~0#1|) (<= (div |ULTIMATE.start_main_~b~0#1| 2) 4611686018427387903) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 1073741823) (= ~counter~0 (+ |v_ULTIMATE.start_main_#t~post7#1_103| 1)) (<= 1 (div |ULTIMATE.start_main_~b~0#1| 2)) (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0))) (<= 9223372036854775808 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)))' at error location [2023-12-02 15:39:18,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:39:18,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:39:18,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-12-02 15:39:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423504795] [2023-12-02 15:39:18,534 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:39:18,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:39:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:39:18,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:39:18,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-12-02 15:39:18,535 INFO L87 Difference]: Start difference. First operand 590 states and 743 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:39:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:39:21,143 INFO L93 Difference]: Finished difference Result 786 states and 977 transitions. [2023-12-02 15:39:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:39:21,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2023-12-02 15:39:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:39:21,148 INFO L225 Difference]: With dead ends: 786 [2023-12-02 15:39:21,148 INFO L226 Difference]: Without dead ends: 784 [2023-12-02 15:39:21,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 132 SyntacticMatches, 33 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:39:21,150 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 167 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:39:21,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 311 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 15:39:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2023-12-02 15:39:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 586. [2023-12-02 15:39:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 479 states have (on average 1.2025052192066805) internal successors, (576), 498 states have internal predecessors, (576), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 15:39:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 736 transitions. [2023-12-02 15:39:21,210 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 736 transitions. Word has length 90 [2023-12-02 15:39:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:39:21,210 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 736 transitions. [2023-12-02 15:39:21,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 15:39:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 736 transitions. [2023-12-02 15:39:21,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 15:39:21,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:39:21,212 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:39:21,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-02 15:39:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 15:39:21,412 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:39:21,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:39:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -26744443, now seen corresponding path program 1 times [2023-12-02 15:39:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:39:21,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245143087] [2023-12-02 15:39:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:39:21,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:39:21,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:39:21,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688678934] [2023-12-02 15:39:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:39:21,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:39:21,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:39:21,422 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:39:21,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 15:39:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:39:21,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:39:21,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:39:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-02 15:39:21,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:39:22,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:39:22,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245143087] [2023-12-02 15:39:22,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:39:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688678934] [2023-12-02 15:39:22,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688678934] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:39:22,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1150899556] [2023-12-02 15:39:22,152 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:39:22,152 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:39:22,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:39:22,153 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:39:22,153 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:40:10,784 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:40:10,785 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:40:25,231 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25826#(and (<= 1 |#StackHeapBarrier|) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= ~counter~0 50) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~r~0#1| 4611686018427387902) (<= (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 (+ 4611686018427387902 |ULTIMATE.start_main_~b~0#1|)) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))' at error location [2023-12-02 15:40:25,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:40:25,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:40:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-02 15:40:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702653328] [2023-12-02 15:40:25,231 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:40:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:40:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:40:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:40:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 15:40:25,233 INFO L87 Difference]: Start difference. First operand 586 states and 736 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 15:40:25,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:25,779 INFO L93 Difference]: Finished difference Result 603 states and 744 transitions. [2023-12-02 15:40:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:40:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 90 [2023-12-02 15:40:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:25,783 INFO L225 Difference]: With dead ends: 603 [2023-12-02 15:40:25,783 INFO L226 Difference]: Without dead ends: 596 [2023-12-02 15:40:25,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 147 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=369, Invalid=1887, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 15:40:25,785 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 74 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:25,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 321 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:40:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-12-02 15:40:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 584. [2023-12-02 15:40:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 477 states have (on average 1.1928721174004193) internal successors, (569), 496 states have internal predecessors, (569), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 15:40:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 729 transitions. [2023-12-02 15:40:25,872 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 729 transitions. Word has length 90 [2023-12-02 15:40:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:25,872 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 729 transitions. [2023-12-02 15:40:25,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 15:40:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 729 transitions. [2023-12-02 15:40:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 15:40:25,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:25,874 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:25,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-02 15:40:26,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:26,075 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:40:26,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:26,075 INFO L85 PathProgramCache]: Analyzing trace with hash 650033450, now seen corresponding path program 1 times [2023-12-02 15:40:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:40:26,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501088876] [2023-12-02 15:40:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:40:26,084 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:40:26,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820855373] [2023-12-02 15:40:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:26,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:26,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:40:26,086 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:40:26,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 15:40:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:26,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:40:26,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 15:40:26,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:40:26,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:40:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501088876] [2023-12-02 15:40:26,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:40:26,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820855373] [2023-12-02 15:40:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820855373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:40:26,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:40:26,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:40:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065451775] [2023-12-02 15:40:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:40:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:40:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:40:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:40:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:40:26,221 INFO L87 Difference]: Start difference. First operand 584 states and 729 transitions. Second operand has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 15:40:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:26,327 INFO L93 Difference]: Finished difference Result 589 states and 735 transitions. [2023-12-02 15:40:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:40:26,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2023-12-02 15:40:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:26,330 INFO L225 Difference]: With dead ends: 589 [2023-12-02 15:40:26,330 INFO L226 Difference]: Without dead ends: 587 [2023-12-02 15:40:26,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 15:40:26,331 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:26,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 52 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:40:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-12-02 15:40:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2023-12-02 15:40:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 481 states have (on average 1.1767151767151767) internal successors, (566), 499 states have internal predecessors, (566), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-02 15:40:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 726 transitions. [2023-12-02 15:40:26,414 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 726 transitions. Word has length 105 [2023-12-02 15:40:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:26,415 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 726 transitions. [2023-12-02 15:40:26,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 15:40:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 726 transitions. [2023-12-02 15:40:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-02 15:40:26,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:26,416 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:26,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 15:40:26,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:26,621 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:40:26,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1323799433, now seen corresponding path program 1 times [2023-12-02 15:40:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:40:26,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670173475] [2023-12-02 15:40:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:40:26,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:40:26,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474683303] [2023-12-02 15:40:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:26,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:40:26,628 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:40:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 15:40:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:26,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:40:26,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 15:40:26,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:40:26,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:40:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670173475] [2023-12-02 15:40:26,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:40:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474683303] [2023-12-02 15:40:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474683303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:40:26,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:40:26,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:40:26,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654184114] [2023-12-02 15:40:26,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:40:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:40:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:40:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:40:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:40:26,769 INFO L87 Difference]: Start difference. First operand 587 states and 726 transitions. Second operand has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 15:40:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:26,878 INFO L93 Difference]: Finished difference Result 590 states and 729 transitions. [2023-12-02 15:40:26,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:40:26,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2023-12-02 15:40:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:26,881 INFO L225 Difference]: With dead ends: 590 [2023-12-02 15:40:26,881 INFO L226 Difference]: Without dead ends: 588 [2023-12-02 15:40:26,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 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 15:40:26,882 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:26,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 53 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:40:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-02 15:40:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 508. [2023-12-02 15:40:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 416 states have (on average 1.1466346153846154) internal successors, (477), 433 states have internal predecessors, (477), 67 states have call successors, (67), 10 states have call predecessors, (67), 10 states have return successors, (67), 64 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-02 15:40:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 611 transitions. [2023-12-02 15:40:26,936 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 611 transitions. Word has length 106 [2023-12-02 15:40:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 611 transitions. [2023-12-02 15:40:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 15:40:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 611 transitions. [2023-12-02 15:40:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-02 15:40:26,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:26,937 INFO L195 NwaCegarLoop]: trace histogram [12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:40:26,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 15:40:27,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:27,139 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:40:27,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1911890636, now seen corresponding path program 1 times [2023-12-02 15:40:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:40:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834370106] [2023-12-02 15:40:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:40:27,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:40:27,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094444664] [2023-12-02 15:40:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:27,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:27,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:40:27,148 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:40:27,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 15:40:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:27,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:40:27,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-02 15:40:27,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:40:27,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:40:27,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834370106] [2023-12-02 15:40:27,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:40:27,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094444664] [2023-12-02 15:40:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094444664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:40:27,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:40:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:40:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290036657] [2023-12-02 15:40:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:40:27,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:40:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:40:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:40:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:40:27,268 INFO L87 Difference]: Start difference. First operand 508 states and 611 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 15:40:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:40:27,379 INFO L93 Difference]: Finished difference Result 511 states and 613 transitions. [2023-12-02 15:40:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:40:27,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2023-12-02 15:40:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:40:27,382 INFO L225 Difference]: With dead ends: 511 [2023-12-02 15:40:27,382 INFO L226 Difference]: Without dead ends: 505 [2023-12-02 15:40:27,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 15:40:27,383 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:40:27,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 55 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:40:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-02 15:40:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 453. [2023-12-02 15:40:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 370 states have (on average 1.127027027027027) internal successors, (417), 387 states have internal predecessors, (417), 59 states have call successors, (59), 10 states have call predecessors, (59), 10 states have return successors, (59), 55 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-02 15:40:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 535 transitions. [2023-12-02 15:40:27,439 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 535 transitions. Word has length 107 [2023-12-02 15:40:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:40:27,439 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 535 transitions. [2023-12-02 15:40:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 15:40:27,440 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 535 transitions. [2023-12-02 15:40:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 15:40:27,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:40:27,440 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-12-02 15:40:27,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 15:40:27,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:27,641 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:40:27,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:40:27,641 INFO L85 PathProgramCache]: Analyzing trace with hash 611677414, now seen corresponding path program 1 times [2023-12-02 15:40:27,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:40:27,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688458125] [2023-12-02 15:40:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:40:27,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:40:27,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833512577] [2023-12-02 15:40:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:40:27,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:40:27,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:40:27,649 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:40:27,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-02 15:40:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:40:27,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:40:27,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:40:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 15:40:27,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:40:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 15:40:28,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:40:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688458125] [2023-12-02 15:40:28,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:40:28,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833512577] [2023-12-02 15:40:28,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833512577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:40:28,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [906760173] [2023-12-02 15:40:28,091 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:40:28,091 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:40:28,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:40:28,091 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:40:28,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:41:16,896 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:41:16,897 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:41:33,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32809#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= ~counter~0 2147483647) (or (< ~counter~0 51) (and (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807))) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2023-12-02 15:41:33,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:41:33,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:41:33,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-02 15:41:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561367280] [2023-12-02 15:41:33,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:41:33,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 15:41:33,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 15:41:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=1806, Unknown=0, NotChecked=0, Total=2256 [2023-12-02 15:41:33,599 INFO L87 Difference]: Start difference. First operand 453 states and 535 transitions. Second operand has 12 states, 11 states have (on average 13.363636363636363) internal successors, (147), 12 states have internal predecessors, (147), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-02 15:41:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:35,312 INFO L93 Difference]: Finished difference Result 572 states and 669 transitions. [2023-12-02 15:41:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 15:41:35,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.363636363636363) internal successors, (147), 12 states have internal predecessors, (147), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 115 [2023-12-02 15:41:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:35,316 INFO L225 Difference]: With dead ends: 572 [2023-12-02 15:41:35,316 INFO L226 Difference]: Without dead ends: 571 [2023-12-02 15:41:35,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 289 SyntacticMatches, 8 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=754, Invalid=3668, Unknown=0, NotChecked=0, Total=4422 [2023-12-02 15:41:35,319 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 508 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:35,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 386 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 15:41:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2023-12-02 15:41:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 472. [2023-12-02 15:41:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 386 states have (on average 1.116580310880829) internal successors, (431), 402 states have internal predecessors, (431), 62 states have call successors, (62), 10 states have call predecessors, (62), 10 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 15:41:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 555 transitions. [2023-12-02 15:41:35,395 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 555 transitions. Word has length 115 [2023-12-02 15:41:35,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:35,395 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 555 transitions. [2023-12-02 15:41:35,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.363636363636363) internal successors, (147), 12 states have internal predecessors, (147), 10 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-12-02 15:41:35,395 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 555 transitions. [2023-12-02 15:41:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-02 15:41:35,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:35,396 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-12-02 15:41:35,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-02 15:41:35,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-02 15:41:35,597 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:41:35,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:35,597 INFO L85 PathProgramCache]: Analyzing trace with hash 694145490, now seen corresponding path program 2 times [2023-12-02 15:41:35,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:35,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859134554] [2023-12-02 15:41:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:35,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:35,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:41:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034538376] [2023-12-02 15:41:35,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:41:35,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:41:35,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:41:35,604 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:41:35,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 15:41:35,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 15:41:35,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:41:35,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:41:35,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-02 15:41:35,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:41:35,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:35,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859134554] [2023-12-02 15:41:35,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:41:35,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034538376] [2023-12-02 15:41:35,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034538376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:41:35,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:41:35,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 15:41:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766913513] [2023-12-02 15:41:35,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:41:35,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:41:35,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:41:35,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:41:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:41:35,722 INFO L87 Difference]: Start difference. First operand 472 states and 555 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 15:41:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:41:35,930 INFO L93 Difference]: Finished difference Result 665 states and 778 transitions. [2023-12-02 15:41:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:41:35,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 115 [2023-12-02 15:41:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:41:35,933 INFO L225 Difference]: With dead ends: 665 [2023-12-02 15:41:35,933 INFO L226 Difference]: Without dead ends: 409 [2023-12-02 15:41:35,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 15:41:35,934 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 55 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:41:35,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 130 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 15:41:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-12-02 15:41:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 386. [2023-12-02 15:41:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 317 states have (on average 1.1451104100946372) internal successors, (363), 332 states have internal predecessors, (363), 48 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-02 15:41:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 459 transitions. [2023-12-02 15:41:36,001 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 459 transitions. Word has length 115 [2023-12-02 15:41:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:41:36,001 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 459 transitions. [2023-12-02 15:41:36,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-02 15:41:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 459 transitions. [2023-12-02 15:41:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 15:41:36,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:41:36,002 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-12-02 15:41:36,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 15:41:36,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-02 15:41:36,203 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:41:36,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:41:36,203 INFO L85 PathProgramCache]: Analyzing trace with hash -578970038, now seen corresponding path program 1 times [2023-12-02 15:41:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:41:36,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089166791] [2023-12-02 15:41:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:36,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:41:36,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:41:36,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88371865] [2023-12-02 15:41:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:41:36,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:41:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:41:36,212 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:41:36,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 15:41:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:41:36,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:41:36,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:41:36,457 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 15:41:36,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:41:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-12-02 15:41:36,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:41:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089166791] [2023-12-02 15:41:36,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:41:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88371865] [2023-12-02 15:41:36,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88371865] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:41:36,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [498083261] [2023-12-02 15:41:36,609 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:41:36,609 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:41:36,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:41:36,610 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:41:36,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:42:23,154 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:42:23,155 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:42:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [498083261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:42:39,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:42:39,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [6, 6] total 46 [2023-12-02 15:42:39,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888840047] [2023-12-02 15:42:39,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:42:39,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 15:42:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:42:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 15:42:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=1803, Unknown=0, NotChecked=0, Total=2162 [2023-12-02 15:42:39,450 INFO L87 Difference]: Start difference. First operand 386 states and 459 transitions. Second operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:42:52,748 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 [] [2023-12-02 15:42:54,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 15:42:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:42:55,622 INFO L93 Difference]: Finished difference Result 550 states and 655 transitions. [2023-12-02 15:42:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 15:42:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 120 [2023-12-02 15:42:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:42:55,625 INFO L225 Difference]: With dead ends: 550 [2023-12-02 15:42:55,625 INFO L226 Difference]: Without dead ends: 515 [2023-12-02 15:42:55,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 302 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=972, Invalid=4284, Unknown=0, NotChecked=0, Total=5256 [2023-12-02 15:42:55,627 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 321 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 70 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:42:55,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 162 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1271 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 15:42:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2023-12-02 15:42:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 449. [2023-12-02 15:42:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 369 states have (on average 1.1409214092140922) internal successors, (421), 384 states have internal predecessors, (421), 58 states have call successors, (58), 8 states have call predecessors, (58), 8 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 15:42:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 537 transitions. [2023-12-02 15:42:55,689 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 537 transitions. Word has length 120 [2023-12-02 15:42:55,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:42:55,690 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 537 transitions. [2023-12-02 15:42:55,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 15:42:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 537 transitions. [2023-12-02 15:42:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 15:42:55,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:42:55,691 INFO L195 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 15:42:55,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 15:42:55,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:55,891 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:42:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:42:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1387256852, now seen corresponding path program 1 times [2023-12-02 15:42:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:42:55,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177793176] [2023-12-02 15:42:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:42:55,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:42:55,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645323491] [2023-12-02 15:42:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:42:55,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:42:55,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:42:55,900 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:42:55,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 15:42:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:42:55,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 15:42:55,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:42:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 258 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 15:42:56,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:42:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 82 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-12-02 15:42:56,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:42:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177793176] [2023-12-02 15:42:56,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:42:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645323491] [2023-12-02 15:42:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645323491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:42:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2063817167] [2023-12-02 15:42:56,378 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:42:56,378 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:42:56,379 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:42:56,379 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:42:56,379 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:43:30,326 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:43:30,327 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:43:42,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '38553#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 15:43:42,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:43:42,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:43:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-02 15:43:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081305226] [2023-12-02 15:43:42,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:43:42,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 15:43:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:43:42,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 15:43:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=3467, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 15:43:42,377 INFO L87 Difference]: Start difference. First operand 449 states and 537 transitions. Second operand has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 10 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-02 15:43:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:43:43,056 INFO L93 Difference]: Finished difference Result 921 states and 1107 transitions. [2023-12-02 15:43:43,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-02 15:43:43,057 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 10 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 135 [2023-12-02 15:43:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:43:43,060 INFO L225 Difference]: With dead ends: 921 [2023-12-02 15:43:43,060 INFO L226 Difference]: Without dead ends: 755 [2023-12-02 15:43:43,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 332 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3641 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=987, Invalid=7385, Unknown=0, NotChecked=0, Total=8372 [2023-12-02 15:43:43,064 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 210 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:43:43,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 617 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:43:43,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-12-02 15:43:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 718. [2023-12-02 15:43:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 592 states have (on average 1.1030405405405406) internal successors, (653), 606 states have internal predecessors, (653), 95 states have call successors, (95), 17 states have call predecessors, (95), 17 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-02 15:43:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 843 transitions. [2023-12-02 15:43:43,169 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 843 transitions. Word has length 135 [2023-12-02 15:43:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:43:43,169 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 843 transitions. [2023-12-02 15:43:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 10 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2023-12-02 15:43:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 843 transitions. [2023-12-02 15:43:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-02 15:43:43,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:43:43,170 INFO L195 NwaCegarLoop]: trace histogram [22, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:43:43,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 15:43:43,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-02 15:43:43,371 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:43:43,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:43:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1326547762, now seen corresponding path program 3 times [2023-12-02 15:43:43,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:43:43,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756903176] [2023-12-02 15:43:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:43:43,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:43:43,381 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:43:43,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745975992] [2023-12-02 15:43:43,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:43:43,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:43:43,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:43:43,382 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:43:43,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-02 15:43:43,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:43:43,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:43:43,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:43:43,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:43:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 80 proven. 93 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-02 15:43:43,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:43:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 80 proven. 93 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-12-02 15:43:43,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:43:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756903176] [2023-12-02 15:43:43,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:43:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745975992] [2023-12-02 15:43:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745975992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:43:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2066148658] [2023-12-02 15:43:43,741 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:43:43,742 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:43:43,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:43:43,742 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:43:43,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:44:30,840 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:44:30,842 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:44:55,266 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '41700#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 4611686018427387904 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= ~counter~0 2147483647) (or (< ~counter~0 51) (and (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 0 (+ 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) 9223372036854775807))) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2023-12-02 15:44:55,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:44:55,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:44:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 15:44:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82555380] [2023-12-02 15:44:55,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:44:55,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:44:55,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:44:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:44:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 15:44:55,268 INFO L87 Difference]: Start difference. First operand 718 states and 843 transitions. Second operand has 8 states, 7 states have (on average 24.142857142857142) internal successors, (169), 8 states have internal predecessors, (169), 7 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-12-02 15:44:55,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:44:55,752 INFO L93 Difference]: Finished difference Result 1054 states and 1233 transitions. [2023-12-02 15:44:55,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 15:44:55,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 24.142857142857142) internal successors, (169), 8 states have internal predecessors, (169), 7 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 181 [2023-12-02 15:44:55,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:44:55,758 INFO L225 Difference]: With dead ends: 1054 [2023-12-02 15:44:55,758 INFO L226 Difference]: Without dead ends: 1053 [2023-12-02 15:44:55,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 487 SyntacticMatches, 16 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=408, Invalid=2042, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 15:44:55,759 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 270 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:44:55,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 236 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:44:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-12-02 15:44:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 884. [2023-12-02 15:44:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 731 states have (on average 1.1012311901504788) internal successors, (805), 745 states have internal predecessors, (805), 122 states have call successors, (122), 17 states have call predecessors, (122), 17 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2023-12-02 15:44:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1049 transitions. [2023-12-02 15:44:55,894 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1049 transitions. Word has length 181 [2023-12-02 15:44:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:44:55,895 INFO L495 AbstractCegarLoop]: Abstraction has 884 states and 1049 transitions. [2023-12-02 15:44:55,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 24.142857142857142) internal successors, (169), 8 states have internal predecessors, (169), 7 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2023-12-02 15:44:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1049 transitions. [2023-12-02 15:44:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-02 15:44:55,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:44:55,898 INFO L195 NwaCegarLoop]: trace histogram [23, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-12-02 15:44:55,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-02 15:44:56,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:44:56,098 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:44:56,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:44:56,098 INFO L85 PathProgramCache]: Analyzing trace with hash -664030258, now seen corresponding path program 1 times [2023-12-02 15:44:56,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:44:56,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835287678] [2023-12-02 15:44:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:56,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:44:56,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:44:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648631868] [2023-12-02 15:44:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:44:56,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:44:56,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:44:56,109 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:44:56,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 15:44:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:44:56,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:44:56,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:44:56,287 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 410 proven. 48 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-12-02 15:44:56,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:44:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 158 proven. 48 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2023-12-02 15:44:56,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:44:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835287678] [2023-12-02 15:44:56,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:44:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648631868] [2023-12-02 15:44:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648631868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:44:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1757816732] [2023-12-02 15:44:56,414 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:44:56,414 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:44:56,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:44:56,414 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:44:56,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:45:42,848 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:45:42,849 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:46:03,070 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45270#(and (<= 1 |#StackHeapBarrier|) (= (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (<= 0 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|)) (= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~b~0#1| 4611686018427387903) (<= (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) (+ 9223372036854775808 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (= ~counter~0 2147483647) (= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2023-12-02 15:46:03,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:46:03,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:46:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2023-12-02 15:46:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177321899] [2023-12-02 15:46:03,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:46:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:46:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:46:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:46:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1577, Unknown=0, NotChecked=0, Total=1892 [2023-12-02 15:46:03,073 INFO L87 Difference]: Start difference. First operand 884 states and 1049 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-12-02 15:46:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:46:03,565 INFO L93 Difference]: Finished difference Result 1496 states and 1777 transitions. [2023-12-02 15:46:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:46:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 199 [2023-12-02 15:46:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:46:03,570 INFO L225 Difference]: With dead ends: 1496 [2023-12-02 15:46:03,570 INFO L226 Difference]: Without dead ends: 1005 [2023-12-02 15:46:03,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 533 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=347, Invalid=2005, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 15:46:03,572 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 169 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:46:03,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 345 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:46:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-12-02 15:46:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 916. [2023-12-02 15:46:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 763 states have (on average 1.1127129750982963) internal successors, (849), 776 states have internal predecessors, (849), 125 states have call successors, (125), 14 states have call predecessors, (125), 14 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2023-12-02 15:46:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1099 transitions. [2023-12-02 15:46:03,728 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1099 transitions. Word has length 199 [2023-12-02 15:46:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:46:03,728 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1099 transitions. [2023-12-02 15:46:03,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 6 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-12-02 15:46:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1099 transitions. [2023-12-02 15:46:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-02 15:46:03,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:46:03,731 INFO L195 NwaCegarLoop]: trace histogram [26, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2023-12-02 15:46:03,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-02 15:46:03,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-02 15:46:03,932 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:46:03,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:46:03,932 INFO L85 PathProgramCache]: Analyzing trace with hash 114888239, now seen corresponding path program 2 times [2023-12-02 15:46:03,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:46:03,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778167545] [2023-12-02 15:46:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:46:03,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:46:03,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:46:03,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709310818] [2023-12-02 15:46:03,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:46:03,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:46:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:46:03,948 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:46:03,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 15:46:04,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 15:46:04,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:46:04,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:46:04,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:46:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-12-02 15:46:04,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:46:04,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:46:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778167545] [2023-12-02 15:46:04,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:46:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709310818] [2023-12-02 15:46:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709310818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:46:04,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:46:04,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 15:46:04,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284235918] [2023-12-02 15:46:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:46:04,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:46:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:46:04,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:46:04,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:46:04,058 INFO L87 Difference]: Start difference. First operand 916 states and 1099 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:46:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:46:04,260 INFO L93 Difference]: Finished difference Result 931 states and 1112 transitions. [2023-12-02 15:46:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 15:46:04,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 222 [2023-12-02 15:46:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:46:04,264 INFO L225 Difference]: With dead ends: 931 [2023-12-02 15:46:04,264 INFO L226 Difference]: Without dead ends: 890 [2023-12-02 15:46:04,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 15:46:04,265 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:46:04,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 198 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 15:46:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-12-02 15:46:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 887. [2023-12-02 15:46:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 737 states have (on average 1.10719131614654) internal successors, (816), 750 states have internal predecessors, (816), 120 states have call successors, (120), 16 states have call predecessors, (120), 16 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-02 15:46:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1056 transitions. [2023-12-02 15:46:04,395 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1056 transitions. Word has length 222 [2023-12-02 15:46:04,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:46:04,396 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1056 transitions. [2023-12-02 15:46:04,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 15:46:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1056 transitions. [2023-12-02 15:46:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-02 15:46:04,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:46:04,397 INFO L195 NwaCegarLoop]: trace histogram [27, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:46:04,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-02 15:46:04,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-02 15:46:04,598 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:46:04,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:46:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1736264315, now seen corresponding path program 1 times [2023-12-02 15:46:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:46:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785454110] [2023-12-02 15:46:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:46:04,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:46:04,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:46:04,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331478736] [2023-12-02 15:46:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:46:04,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:46:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:46:04,611 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:46:04,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 15:46:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:46:04,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 15:46:04,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:46:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 0 proven. 993 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-02 15:46:04,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:46:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2023-12-02 15:46:05,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:46:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785454110] [2023-12-02 15:46:05,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:46:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331478736] [2023-12-02 15:46:05,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331478736] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:46:05,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282934502] [2023-12-02 15:46:05,409 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:46:05,409 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:46:05,410 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:46:05,410 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:46:05,410 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:46:51,570 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:46:51,571 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:47:14,560 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '52470#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post7#1|) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647))' at error location [2023-12-02 15:47:14,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:47:14,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:47:14,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 37 [2023-12-02 15:47:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913520627] [2023-12-02 15:47:14,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 15:47:14,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 15:47:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:47:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 15:47:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=4714, Unknown=0, NotChecked=0, Total=5402 [2023-12-02 15:47:14,563 INFO L87 Difference]: Start difference. First operand 887 states and 1056 transitions. Second operand has 38 states, 37 states have (on average 8.243243243243244) internal successors, (305), 38 states have internal predecessors, (305), 16 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 16 states have call predecessors, (54), 16 states have call successors, (54) [2023-12-02 15:47:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:47:16,147 INFO L93 Difference]: Finished difference Result 1986 states and 2381 transitions. [2023-12-02 15:47:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-02 15:47:16,148 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 8.243243243243244) internal successors, (305), 38 states have internal predecessors, (305), 16 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 16 states have call predecessors, (54), 16 states have call successors, (54) Word has length 229 [2023-12-02 15:47:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:47:16,154 INFO L225 Difference]: With dead ends: 1986 [2023-12-02 15:47:16,154 INFO L226 Difference]: Without dead ends: 1736 [2023-12-02 15:47:16,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 589 SyntacticMatches, 24 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6612 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=1984, Invalid=12058, Unknown=0, NotChecked=0, Total=14042 [2023-12-02 15:47:16,157 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 431 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:47:16,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 930 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:47:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2023-12-02 15:47:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1570. [2023-12-02 15:47:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1304 states have (on average 1.098159509202454) internal successors, (1432), 1319 states have internal predecessors, (1432), 216 states have call successors, (216), 36 states have call predecessors, (216), 36 states have return successors, (216), 214 states have call predecessors, (216), 216 states have call successors, (216) [2023-12-02 15:47:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1864 transitions. [2023-12-02 15:47:16,400 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1864 transitions. Word has length 229 [2023-12-02 15:47:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:47:16,401 INFO L495 AbstractCegarLoop]: Abstraction has 1570 states and 1864 transitions. [2023-12-02 15:47:16,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 8.243243243243244) internal successors, (305), 38 states have internal predecessors, (305), 16 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 16 states have call predecessors, (54), 16 states have call successors, (54) [2023-12-02 15:47:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1864 transitions. [2023-12-02 15:47:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-02 15:47:16,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:47:16,403 INFO L195 NwaCegarLoop]: trace histogram [31, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-02 15:47:16,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-02 15:47:16,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-02 15:47:16,604 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-12-02 15:47:16,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:47:16,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1964664216, now seen corresponding path program 2 times [2023-12-02 15:47:16,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:47:16,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120987626] [2023-12-02 15:47:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:47:16,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:47:16,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:47:16,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087689377] [2023-12-02 15:47:16,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:47:16,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:47:16,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:47:16,615 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:47:16,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_158230dd-5e8d-4cbc-a20a-06ab81e16327/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 15:47:16,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:47:16,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:47:16,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 15:47:16,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:47:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1446 backedges. 54 proven. 190 refuted. 0 times theorem prover too weak. 1202 trivial. 0 not checked. [2023-12-02 15:47:27,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:47:27,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:47:27,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120987626] [2023-12-02 15:47:27,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 15:47:27,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087689377] [2023-12-02 15:47:27,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087689377] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:47:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2014874898] [2023-12-02 15:47:27,904 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-12-02 15:47:27,904 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:47:27,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:47:27,904 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:47:27,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:48:00,602 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2023-12-02 15:48:00,603 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:49:31,405 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '57724#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 9223372036854775808 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~q~0#1|)) (<= |ULTIMATE.start_main_~r~0#1| 9223372036854775807))' at error location [2023-12-02 15:49:31,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:49:31,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:49:31,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-12-02 15:49:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139161614] [2023-12-02 15:49:31,406 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 15:49:31,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:49:31,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:49:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:49:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2106, Unknown=6, NotChecked=0, Total=2450 [2023-12-02 15:49:31,407 INFO L87 Difference]: Start difference. First operand 1570 states and 1864 transitions. Second operand has 10 states, 8 states have (on average 10.0) internal successors, (80), 10 states have internal predecessors, (80), 3 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-02 15:49:35,983 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 15:49:42,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:49:46,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:49:50,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:49:52,384 WARN L539 Checker$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 15:49:54,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:49:56,401 WARN L539 Checker$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 15:49:58,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:50:00,410 WARN L539 Checker$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 15:50:02,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:50:04,430 WARN L539 Checker$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 15:50:06,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:50:08,441 WARN L539 Checker$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 15:50:10,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-12-02 15:50:12,448 WARN L539 Checker$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 15:50:14,450 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]