./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:39:10,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:39:10,609 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:39:10,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:39:10,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:39:10,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:39:10,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:39:10,660 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:39:10,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:39:10,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:39:10,663 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:39:10,664 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:39:10,665 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:39:10,667 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:39:10,667 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:39:10,668 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:39:10,668 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:39:10,669 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:39:10,669 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:39:10,669 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:39:10,670 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:39:10,674 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:39:10,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:39:10,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:39:10,676 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:39:10,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:39:10,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:39:10,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:39:10,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:39:10,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:39:10,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:39:10,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:39:10,680 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:39:10,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:39:10,681 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:39:10,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:39:10,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:39:10,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:39:10,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:39:10,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:39:10,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:10,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:39:10,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:39:10,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:39:10,684 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:39:10,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:39:10,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:39:10,685 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:39:10,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:39:10,686 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_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2024-11-02 12:39:11,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:39:11,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:39:11,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:39:11,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:39:11,029 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:39:11,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c Unable to find full path for "g++" [2024-11-02 12:39:13,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:39:13,619 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:39:13,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound1.c [2024-11-02 12:39:13,630 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/data/9949f0dc9/02c3044f4a334d9295ba565651b4a169/FLAGaf6e46041 [2024-11-02 12:39:13,650 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/data/9949f0dc9/02c3044f4a334d9295ba565651b4a169 [2024-11-02 12:39:13,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:39:13,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:39:13,656 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:13,656 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:39:13,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:39:13,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cdfceac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13, skipping insertion in model container [2024-11-02 12:39:13,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,688 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:39:13,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:13,911 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:39:13,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:39:13,947 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:39:13,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13 WrapperNode [2024-11-02 12:39:13,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:39:13,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:13,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:39:13,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:39:13,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,963 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,981 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-02 12:39:13,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:39:13,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:39:13,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:39:13,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:39:13,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:13,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:14,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:14,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:14,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:14,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:39:14,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:39:14,005 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:39:14,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:39:14,006 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (1/1) ... [2024-11-02 12:39:14,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:39:14,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:14,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:39:14,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:39:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:39:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:39:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:39:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:39:14,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:39:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:39:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:39:14,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:39:14,135 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:39:14,137 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:39:14,405 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-02 12:39:14,405 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:39:14,452 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:39:14,453 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:39:14,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:14 BoogieIcfgContainer [2024-11-02 12:39:14,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:39:14,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:39:14,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:39:14,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:39:14,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:39:13" (1/3) ... [2024-11-02 12:39:14,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a68808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:14, skipping insertion in model container [2024-11-02 12:39:14,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:39:13" (2/3) ... [2024-11-02 12:39:14,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a68808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:39:14, skipping insertion in model container [2024-11-02 12:39:14,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:39:14" (3/3) ... [2024-11-02 12:39:14,464 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound1.c [2024-11-02 12:39:14,480 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:39:14,480 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-02 12:39:14,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:39:14,544 INFO L333 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, 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;@1e75ee39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:39:14,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-02 12:39:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 48 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:39:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:39:14,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:14,556 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:14,556 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:14,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 885391590, now seen corresponding path program 1 times [2024-11-02 12:39:14,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:14,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902850548] [2024-11-02 12:39:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:14,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:14,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:14,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902850548] [2024-11-02 12:39:14,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902850548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:14,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:14,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:14,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657656209] [2024-11-02 12:39:14,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:14,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:39:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:39:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:39:14,802 INFO L87 Difference]: Start difference. First operand has 55 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 48 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:14,837 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2024-11-02 12:39:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:39:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2024-11-02 12:39:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:14,850 INFO L225 Difference]: With dead ends: 68 [2024-11-02 12:39:14,850 INFO L226 Difference]: Without dead ends: 52 [2024-11-02 12:39:14,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:39:14,862 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:14,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:39:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-02 12:39:14,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-02 12:39:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 46 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2024-11-02 12:39:14,924 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 10 [2024-11-02 12:39:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:14,926 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2024-11-02 12:39:14,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2024-11-02 12:39:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:39:14,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:14,930 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:14,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:39:14,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:14,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 885388443, now seen corresponding path program 1 times [2024-11-02 12:39:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642713995] [2024-11-02 12:39:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:39:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718722848] [2024-11-02 12:39:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:14,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:14,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:14,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:14,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:39:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:15,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:39:15,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:15,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:39:15,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642713995] [2024-11-02 12:39:15,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:39:15,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718722848] [2024-11-02 12:39:15,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718722848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:15,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:15,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:39:15,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016517205] [2024-11-02 12:39:15,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:15,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:39:15,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:39:15,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:15,075 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:15,274 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2024-11-02 12:39:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:39:15,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2024-11-02 12:39:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:15,276 INFO L225 Difference]: With dead ends: 86 [2024-11-02 12:39:15,276 INFO L226 Difference]: Without dead ends: 80 [2024-11-02 12:39:15,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:39:15,281 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 26 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:15,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-02 12:39:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2024-11-02 12:39:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 46 states have (on average 1.7173913043478262) internal successors, (79), 65 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:39:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2024-11-02 12:39:15,297 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 10 [2024-11-02 12:39:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:15,298 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2024-11-02 12:39:15,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2024-11-02 12:39:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:39:15,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:15,299 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:15,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:39:15,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:15,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:15,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash 454770653, now seen corresponding path program 1 times [2024-11-02 12:39:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740040454] [2024-11-02 12:39:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:15,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:15,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:15,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740040454] [2024-11-02 12:39:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740040454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:15,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:15,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:39:15,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509325059] [2024-11-02 12:39:15,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:15,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:15,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:15,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:15,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:15,643 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:15,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:15,882 INFO L93 Difference]: Finished difference Result 116 states and 148 transitions. [2024-11-02 12:39:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:15,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2024-11-02 12:39:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:15,885 INFO L225 Difference]: With dead ends: 116 [2024-11-02 12:39:15,885 INFO L226 Difference]: Without dead ends: 109 [2024-11-02 12:39:15,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:15,887 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:15,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 59 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-02 12:39:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2024-11-02 12:39:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 96 states have internal predecessors, (123), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:39:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2024-11-02 12:39:15,905 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 12 [2024-11-02 12:39:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:15,905 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2024-11-02 12:39:15,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2024-11-02 12:39:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-02 12:39:15,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:15,906 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:15,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:39:15,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:15,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:15,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1212988407, now seen corresponding path program 1 times [2024-11-02 12:39:15,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:15,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187194716] [2024-11-02 12:39:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:16,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187194716] [2024-11-02 12:39:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187194716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:16,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:16,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:39:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333561890] [2024-11-02 12:39:16,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:16,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:16,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:16,099 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:16,525 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2024-11-02 12:39:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:16,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-11-02 12:39:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:16,527 INFO L225 Difference]: With dead ends: 111 [2024-11-02 12:39:16,527 INFO L226 Difference]: Without dead ends: 102 [2024-11-02 12:39:16,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:16,529 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:16,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 76 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:39:16,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-02 12:39:16,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-11-02 12:39:16,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 91 states have internal predecessors, (113), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:39:16,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2024-11-02 12:39:16,552 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 13 [2024-11-02 12:39:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:16,552 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2024-11-02 12:39:16,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2024-11-02 12:39:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:39:16,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:16,553 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:16,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:39:16,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:16,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:16,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1052064993, now seen corresponding path program 1 times [2024-11-02 12:39:16,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:16,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866003505] [2024-11-02 12:39:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:16,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:16,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866003505] [2024-11-02 12:39:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866003505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611173978] [2024-11-02 12:39:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:16,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:16,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:16,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:16,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:39:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:16,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:39:16,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:16,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:39:16,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611173978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:16,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:39:16,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-02 12:39:16,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946332730] [2024-11-02 12:39:16,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:16,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:16,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:39:16,982 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:17,190 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2024-11-02 12:39:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-11-02 12:39:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:17,191 INFO L225 Difference]: With dead ends: 103 [2024-11-02 12:39:17,192 INFO L226 Difference]: Without dead ends: 102 [2024-11-02 12:39:17,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:39:17,193 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 72 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:17,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 42 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:17,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-02 12:39:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-11-02 12:39:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 91 states have internal predecessors, (112), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:39:17,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2024-11-02 12:39:17,217 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 14 [2024-11-02 12:39:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:17,217 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2024-11-02 12:39:17,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:17,218 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2024-11-02 12:39:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:39:17,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:17,218 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:17,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:39:17,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:17,419 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:17,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1745723641, now seen corresponding path program 1 times [2024-11-02 12:39:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674859591] [2024-11-02 12:39:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:17,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:39:17,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336078905] [2024-11-02 12:39:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:17,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:17,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:17,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:17,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:39:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:17,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:39:17,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:17,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:39:17,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674859591] [2024-11-02 12:39:17,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:39:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336078905] [2024-11-02 12:39:17,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336078905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:17,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:39:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493284984] [2024-11-02 12:39:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:17,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:17,611 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:17,745 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2024-11-02 12:39:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:17,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-11-02 12:39:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:17,747 INFO L225 Difference]: With dead ends: 101 [2024-11-02 12:39:17,747 INFO L226 Difference]: Without dead ends: 100 [2024-11-02 12:39:17,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:39:17,748 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 65 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:17,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 47 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:39:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-02 12:39:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-02 12:39:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 91 states have internal predecessors, (111), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:39:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2024-11-02 12:39:17,776 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 15 [2024-11-02 12:39:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:17,776 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2024-11-02 12:39:17,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:39:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2024-11-02 12:39:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:39:17,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:17,777 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:17,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:39:17,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-02 12:39:17,980 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:17,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1837019302, now seen corresponding path program 1 times [2024-11-02 12:39:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:17,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719384872] [2024-11-02 12:39:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:17,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:18,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:18,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719384872] [2024-11-02 12:39:18,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719384872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849510757] [2024-11-02 12:39:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:18,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:18,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:18,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:18,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:39:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:18,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:39:18,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:18,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849510757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:39:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1255666695] [2024-11-02 12:39:18,360 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-02 12:39:18,361 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:18,366 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:18,372 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:18,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:19,094 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2024-11-02 12:39:19,114 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:39:19,184 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1255666695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:39:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 16 [2024-11-02 12:39:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121845477] [2024-11-02 12:39:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:20,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:39:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:20,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:39:20,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:39:20,321 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 12 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:20,849 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2024-11-02 12:39:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:39:20,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2024-11-02 12:39:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:20,851 INFO L225 Difference]: With dead ends: 106 [2024-11-02 12:39:20,851 INFO L226 Difference]: Without dead ends: 104 [2024-11-02 12:39:20,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:39:20,852 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:20,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 70 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:39:20,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-02 12:39:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-02 12:39:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 75 states have (on average 1.52) internal successors, (114), 94 states have internal predecessors, (114), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:39:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2024-11-02 12:39:20,886 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 25 [2024-11-02 12:39:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:20,886 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2024-11-02 12:39:20,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:20,886 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2024-11-02 12:39:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:39:20,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:20,887 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:20,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:39:21,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-02 12:39:21,091 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:21,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1836711462, now seen corresponding path program 1 times [2024-11-02 12:39:21,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:21,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726081381] [2024-11-02 12:39:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:21,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:21,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726081381] [2024-11-02 12:39:21,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726081381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288170102] [2024-11-02 12:39:21,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:21,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:21,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:21,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:21,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:39:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:21,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:39:21,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:21,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288170102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:39:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1498450248] [2024-11-02 12:39:21,397 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2024-11-02 12:39:21,397 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:21,398 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:21,398 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:21,398 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:21,807 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 44 for LOIs [2024-11-02 12:39:21,814 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:39:21,839 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:22,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1498450248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:22,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:39:22,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 16 [2024-11-02 12:39:22,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179904299] [2024-11-02 12:39:22,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:22,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:39:22,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:22,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:39:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:39:22,801 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 12 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:23,268 INFO L93 Difference]: Finished difference Result 110 states and 132 transitions. [2024-11-02 12:39:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:39:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2024-11-02 12:39:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:23,270 INFO L225 Difference]: With dead ends: 110 [2024-11-02 12:39:23,270 INFO L226 Difference]: Without dead ends: 108 [2024-11-02 12:39:23,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:39:23,271 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:23,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 67 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:39:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-02 12:39:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-02 12:39:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 79 states have (on average 1.4936708860759493) internal successors, (118), 98 states have internal predecessors, (118), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:39:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2024-11-02 12:39:23,296 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 25 [2024-11-02 12:39:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:23,296 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2024-11-02 12:39:23,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2024-11-02 12:39:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-02 12:39:23,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:23,297 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:23,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:39:23,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-02 12:39:23,498 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:23,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash -412111191, now seen corresponding path program 1 times [2024-11-02 12:39:23,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:23,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725989717] [2024-11-02 12:39:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:23,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:39:23,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790435622] [2024-11-02 12:39:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:23,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:23,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:23,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:39:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:23,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:39:23,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:23,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:23,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:23,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725989717] [2024-11-02 12:39:23,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:39:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790435622] [2024-11-02 12:39:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790435622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1260111771] [2024-11-02 12:39:23,922 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 12:39:23,922 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:23,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:23,922 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:23,922 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:25,136 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-02 12:39:25,161 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:39:25,187 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:28,050 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2400#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (exists ((|v_ULTIMATE.start_main_~x2~0#1_39| Int) (|v_ULTIMATE.start_main_~y1~0#1_50| Int)) (and (<= |v_ULTIMATE.start_main_~y1~0#1_50| 2147483647) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_50|) (<= (+ (* |v_ULTIMATE.start_main_~x2~0#1_39| |v_ULTIMATE.start_main_~y1~0#1_50|) 2147483649) 0) (<= 0 (+ |v_ULTIMATE.start_main_~x2~0#1_39| 2147483648)))) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-02 12:39:28,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:39:28,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:39:28,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-02 12:39:28,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771846821] [2024-11-02 12:39:28,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-02 12:39:28,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:39:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:28,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:39:28,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2024-11-02 12:39:28,052 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:28,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:28,218 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2024-11-02 12:39:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:39:28,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-02 12:39:28,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:28,220 INFO L225 Difference]: With dead ends: 116 [2024-11-02 12:39:28,220 INFO L226 Difference]: Without dead ends: 109 [2024-11-02 12:39:28,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=175, Invalid=637, Unknown=0, NotChecked=0, Total=812 [2024-11-02 12:39:28,221 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 84 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:28,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 36 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:39:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-02 12:39:28,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-02 12:39:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.375) internal successors, (110), 94 states have internal predecessors, (110), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:39:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2024-11-02 12:39:28,247 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 28 [2024-11-02 12:39:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:28,247 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2024-11-02 12:39:28,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2024-11-02 12:39:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-02 12:39:28,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:28,249 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:28,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-02 12:39:28,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:28,450 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:28,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 109455015, now seen corresponding path program 1 times [2024-11-02 12:39:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721159193] [2024-11-02 12:39:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:39:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376255304] [2024-11-02 12:39:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:28,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:28,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:28,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:28,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 12:39:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:28,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:39:28,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:28,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:29,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:29,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721159193] [2024-11-02 12:39:29,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:39:29,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376255304] [2024-11-02 12:39:29,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376255304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:29,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606682999] [2024-11-02 12:39:29,131 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 12:39:29,132 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:29,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:29,133 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:29,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:30,149 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-02 12:39:30,170 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:39:30,207 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:32,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2802#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (exists ((|v_ULTIMATE.start_main_~x2~0#1_40| Int) (|v_ULTIMATE.start_main_~y1~0#1_57| Int)) (and (<= |v_ULTIMATE.start_main_~y1~0#1_57| 2147483647) (<= |v_ULTIMATE.start_main_~x2~0#1_40| 2147483647) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_57|) (<= 2147483648 (* |v_ULTIMATE.start_main_~x2~0#1_40| |v_ULTIMATE.start_main_~y1~0#1_57|)))) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-02 12:39:32,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:39:32,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:39:32,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-02 12:39:32,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564219829] [2024-11-02 12:39:32,397 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-02 12:39:32,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:39:32,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:39:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2024-11-02 12:39:32,399 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:32,637 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2024-11-02 12:39:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:39:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-02 12:39:32,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:32,638 INFO L225 Difference]: With dead ends: 154 [2024-11-02 12:39:32,638 INFO L226 Difference]: Without dead ends: 151 [2024-11-02 12:39:32,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2024-11-02 12:39:32,640 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 80 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:32,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 81 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-02 12:39:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2024-11-02 12:39:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 114 states have (on average 1.3859649122807018) internal successors, (158), 128 states have internal predecessors, (158), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:39:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 174 transitions. [2024-11-02 12:39:32,654 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 174 transitions. Word has length 29 [2024-11-02 12:39:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:32,655 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 174 transitions. [2024-11-02 12:39:32,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 174 transitions. [2024-11-02 12:39:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:39:32,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:32,656 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:32,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-02 12:39:32,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:32,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:32,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:32,861 INFO L85 PathProgramCache]: Analyzing trace with hash -967674123, now seen corresponding path program 1 times [2024-11-02 12:39:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759936137] [2024-11-02 12:39:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:32,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:32,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:32,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759936137] [2024-11-02 12:39:32,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759936137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:32,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193932320] [2024-11-02 12:39:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:32,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:32,956 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:32,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:39:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:33,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:39:33,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:33,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:39:33,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193932320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:33,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:39:33,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-02 12:39:33,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524072171] [2024-11-02 12:39:33,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:33,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:39:33,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:39:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:39:33,158 INFO L87 Difference]: Start difference. First operand 140 states and 174 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:33,360 INFO L93 Difference]: Finished difference Result 140 states and 174 transitions. [2024-11-02 12:39:33,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:39:33,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-02 12:39:33,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:33,362 INFO L225 Difference]: With dead ends: 140 [2024-11-02 12:39:33,362 INFO L226 Difference]: Without dead ends: 138 [2024-11-02 12:39:33,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:39:33,363 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:33,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 46 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:39:33,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-02 12:39:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2024-11-02 12:39:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 111 states have (on average 1.3783783783783783) internal successors, (153), 123 states have internal predecessors, (153), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:39:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 169 transitions. [2024-11-02 12:39:33,377 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 169 transitions. Word has length 30 [2024-11-02 12:39:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:33,378 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 169 transitions. [2024-11-02 12:39:33,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 169 transitions. [2024-11-02 12:39:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 12:39:33,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:33,379 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:33,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-02 12:39:33,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:33,583 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:33,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash 66873311, now seen corresponding path program 1 times [2024-11-02 12:39:33,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:33,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404712416] [2024-11-02 12:39:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:33,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:33,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:33,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404712416] [2024-11-02 12:39:33,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404712416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:33,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877698767] [2024-11-02 12:39:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:33,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:33,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:33,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:33,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 12:39:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:33,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:39:33,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:33,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877698767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:34,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1542237046] [2024-11-02 12:39:34,103 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 12:39:34,104 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:34,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:34,105 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:34,105 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:35,103 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2024-11-02 12:39:35,108 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:39:35,119 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:36,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1542237046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:39:36,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [8, 3] total 26 [2024-11-02 12:39:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145945640] [2024-11-02 12:39:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:36,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-02 12:39:36,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-02 12:39:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-11-02 12:39:36,504 INFO L87 Difference]: Start difference. First operand 135 states and 169 transitions. Second operand has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:38,351 INFO L93 Difference]: Finished difference Result 140 states and 169 transitions. [2024-11-02 12:39:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-02 12:39:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2024-11-02 12:39:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:38,354 INFO L225 Difference]: With dead ends: 140 [2024-11-02 12:39:38,355 INFO L226 Difference]: Without dead ends: 135 [2024-11-02 12:39:38,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2024-11-02 12:39:38,356 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 177 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:38,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 49 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:39:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-02 12:39:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2024-11-02 12:39:38,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 107 states have (on average 1.3457943925233644) internal successors, (144), 119 states have internal predecessors, (144), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:39:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2024-11-02 12:39:38,379 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 31 [2024-11-02 12:39:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:38,380 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2024-11-02 12:39:38,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2024-11-02 12:39:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:39:38,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:38,384 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:38,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 12:39:38,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:38,591 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:38,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash 894223917, now seen corresponding path program 1 times [2024-11-02 12:39:38,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:38,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045455950] [2024-11-02 12:39:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:38,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:38,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045455950] [2024-11-02 12:39:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045455950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:39:38,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262645072] [2024-11-02 12:39:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:38,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:38,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:38,819 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:38,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 12:39:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:38,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:39:38,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:39,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:39:39,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262645072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:39:39,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1166443836] [2024-11-02 12:39:39,345 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 12:39:39,345 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:39,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:39,346 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:39,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:40,368 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-02 12:39:40,380 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:39:40,396 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:39:42,551 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4256#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y1~0#1_65| Int) (|v_ULTIMATE.start_main_~x2~0#1_42| Int)) (and (<= 0 |v_ULTIMATE.start_main_~y1~0#1_65|) (<= 0 (+ (* |v_ULTIMATE.start_main_~x2~0#1_42| |v_ULTIMATE.start_main_~y1~0#1_65|) 2147483648)) (<= |v_ULTIMATE.start_main_~y1~0#1_65| 2147483647) (<= (+ (* |v_ULTIMATE.start_main_~x2~0#1_42| |v_ULTIMATE.start_main_~y1~0#1_65|) 1) 0))) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-02 12:39:42,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:39:42,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:39:42,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-02 12:39:42,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446641431] [2024-11-02 12:39:42,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:39:42,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-02 12:39:42,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:42,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-02 12:39:42,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2024-11-02 12:39:42,554 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:43,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:43,310 INFO L93 Difference]: Finished difference Result 134 states and 162 transitions. [2024-11-02 12:39:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-02 12:39:43,310 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-02 12:39:43,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:43,311 INFO L225 Difference]: With dead ends: 134 [2024-11-02 12:39:43,311 INFO L226 Difference]: Without dead ends: 131 [2024-11-02 12:39:43,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=269, Invalid=1537, Unknown=0, NotChecked=0, Total=1806 [2024-11-02 12:39:43,313 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:43,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 62 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:39:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-02 12:39:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2024-11-02 12:39:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 107 states have (on average 1.2710280373831775) internal successors, (136), 116 states have internal predecessors, (136), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:39:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2024-11-02 12:39:43,327 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 32 [2024-11-02 12:39:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:43,327 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2024-11-02 12:39:43,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 12:39:43,328 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2024-11-02 12:39:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:39:43,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:43,328 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:43,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-02 12:39:43,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-02 12:39:43,529 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:43,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:43,530 INFO L85 PathProgramCache]: Analyzing trace with hash -159255839, now seen corresponding path program 1 times [2024-11-02 12:39:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988460383] [2024-11-02 12:39:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:43,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:43,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988460383] [2024-11-02 12:39:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988460383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:43,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:39:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883335458] [2024-11-02 12:39:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:43,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:39:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:39:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:43,610 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:43,759 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2024-11-02 12:39:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:39:43,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-02 12:39:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:43,760 INFO L225 Difference]: With dead ends: 129 [2024-11-02 12:39:43,761 INFO L226 Difference]: Without dead ends: 128 [2024-11-02 12:39:43,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:39:43,762 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:43,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:39:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-02 12:39:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-02 12:39:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 116 states have internal predecessors, (133), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-02 12:39:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2024-11-02 12:39:43,778 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 33 [2024-11-02 12:39:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:43,779 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2024-11-02 12:39:43,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-02 12:39:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2024-11-02 12:39:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:39:43,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:43,784 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:43,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:39:43,784 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-02 12:39:43,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:43,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1951137707, now seen corresponding path program 1 times [2024-11-02 12:39:43,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:43,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850473831] [2024-11-02 12:39:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:39:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:39:43,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576569003] [2024-11-02 12:39:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:43,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:39:43,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:39:43,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:39:43,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1899bc6-28ad-42c6-9ae2-02778f80fada/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-02 12:39:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:43,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 12:39:43,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:39:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:44,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:39:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:39:44,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850473831] [2024-11-02 12:39:44,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:39:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576569003] [2024-11-02 12:39:44,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576569003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:39:44,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289242398] [2024-11-02 12:39:44,170 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2024-11-02 12:39:44,170 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:39:44,171 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:39:44,171 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:39:44,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:39:44,852 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-02 12:39:44,859 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 63 for LOIs [2024-11-02 12:39:44,871 INFO L180 IcfgInterpreter]: Interpretation finished