./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dfc9f1e1cbceb1807370dcac22a0449d857eff9a54bdefbc84178983a910e84 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:19:58,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:19:58,734 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:19:58,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:19:58,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:19:58,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:19:58,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:19:58,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:19:58,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:19:58,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:19:58,767 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:19:58,767 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:19:58,768 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:19:58,768 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:19:58,769 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:19:58,769 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:19:58,770 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:19:58,770 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:19:58,771 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:19:58,771 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:19:58,772 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:19:58,773 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:19:58,773 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:19:58,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:19:58,774 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:19:58,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:19:58,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:19:58,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:19:58,776 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:19:58,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:19:58,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:19:58,777 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:19:58,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:19:58,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:19:58,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:19:58,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:19:58,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:19:58,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:19:58,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:19:58,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:19:58,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:19:58,779 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:19:58,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:19:58,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:19:58,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:19:58,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:19:58,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:19:58,781 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_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dfc9f1e1cbceb1807370dcac22a0449d857eff9a54bdefbc84178983a910e84 [2023-12-02 19:19:59,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:19:59,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:19:59,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:19:59,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:19:59,051 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:19:59,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/bitvector/byte_add-1.i [2023-12-02 19:20:01,762 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:20:01,958 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:20:01,958 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/sv-benchmarks/c/bitvector/byte_add-1.i [2023-12-02 19:20:01,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data/d5e9e77ea/192f42b0a4a342a6b73fb1cfb8437c61/FLAGa673bcd19 [2023-12-02 19:20:01,983 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data/d5e9e77ea/192f42b0a4a342a6b73fb1cfb8437c61 [2023-12-02 19:20:01,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:20:01,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:20:01,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:01,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:20:01,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:20:01,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:01" (1/1) ... [2023-12-02 19:20:01,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfce42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:01, skipping insertion in model container [2023-12-02 19:20:01,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:01" (1/1) ... [2023-12-02 19:20:02,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:20:02,184 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/sv-benchmarks/c/bitvector/byte_add-1.i[1166,1179] [2023-12-02 19:20:02,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:02,240 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:20:02,253 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/sv-benchmarks/c/bitvector/byte_add-1.i[1166,1179] [2023-12-02 19:20:02,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:02,293 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:20:02,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02 WrapperNode [2023-12-02 19:20:02,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:02,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:02,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:20:02,295 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:20:02,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,348 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 153 [2023-12-02 19:20:02,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:02,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:20:02,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:20:02,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:20:02,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,371 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:20:02,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:20:02,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:20:02,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:20:02,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (1/1) ... [2023-12-02 19:20:02,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:20:02,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:02,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:20:02,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:20:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:20:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:20:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:20:02,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:20:02,541 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:20:02,543 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:20:02,857 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:20:03,071 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:20:03,071 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:20:03,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:03 BoogieIcfgContainer [2023-12-02 19:20:03,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:20:03,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:20:03,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:20:03,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:20:03,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:20:01" (1/3) ... [2023-12-02 19:20:03,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371e820c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:03, skipping insertion in model container [2023-12-02 19:20:03,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:02" (2/3) ... [2023-12-02 19:20:03,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371e820c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:03, skipping insertion in model container [2023-12-02 19:20:03,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:03" (3/3) ... [2023-12-02 19:20:03,082 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2023-12-02 19:20:03,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:20:03,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:20:03,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:20:03,145 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2314ff5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:20:03,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:20:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 19:20:03,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:03,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 19:20:03,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:03,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash 306635170, now seen corresponding path program 1 times [2023-12-02 19:20:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:03,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262092474] [2023-12-02 19:20:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:03,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:03,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262092474] [2023-12-02 19:20:03,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262092474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:03,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:03,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:20:03,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953962503] [2023-12-02 19:20:03,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:03,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:20:03,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:03,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:20:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:03,550 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:03,600 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-12-02 19:20:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:20:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 19:20:03,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:03,610 INFO L225 Difference]: With dead ends: 15 [2023-12-02 19:20:03,610 INFO L226 Difference]: Without dead ends: 8 [2023-12-02 19:20:03,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:20:03,616 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:03,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:20:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-02 19:20:03,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-02 19:20:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-12-02 19:20:03,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5 [2023-12-02 19:20:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:03,648 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-12-02 19:20:03,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:03,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-12-02 19:20:03,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 19:20:03,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:03,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 19:20:03,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:20:03,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:03,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 972228040, now seen corresponding path program 1 times [2023-12-02 19:20:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132863216] [2023-12-02 19:20:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:03,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:03,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:20:03,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132863216] [2023-12-02 19:20:03,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132863216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:20:03,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649860417] [2023-12-02 19:20:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:03,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:03,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:03,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:20:03,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:20:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:04,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:20:04,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:04,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:04,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649860417] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [934895663] [2023-12-02 19:20:04,186 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-12-02 19:20:04,187 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:20:04,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:20:04,194 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:20:04,195 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:20:05,798 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:20:09,539 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '82#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_mp_add_~nb~0#1_62| Int) (|v_ULTIMATE.start_mp_add_~na~0#1_60| Int) (|v_ULTIMATE.start_mp_add_~i~0#1_137| Int)) (and (<= 4 (mod |v_ULTIMATE.start_mp_add_~i~0#1_137| 256)) (<= 1 |v_ULTIMATE.start_mp_add_~nb~0#1_62|) (<= |v_ULTIMATE.start_mp_add_~nb~0#1_62| 4) (<= 1 |v_ULTIMATE.start_mp_add_~na~0#1_60|) (<= |v_ULTIMATE.start_mp_add_~na~0#1_60| 4))) (exists ((|v_ULTIMATE.start_mp_add_~r3~0#1_72| Int) (|v_ULTIMATE.start_mp_add_~r0~0#1_62| Int) (|v_ULTIMATE.start_mp_add_~r1~0#1_58| Int) (|v_ULTIMATE.start_mp_add_#t~nondet1#1_50| Int) (|v_ULTIMATE.start_mp_add_#t~nondet2#1_41| Int) (|v_ULTIMATE.start_mp_add_#t~nondet1#1_42| Int) (|v_ULTIMATE.start_mp_add_#t~nondet2#1_50| Int) (|v_ULTIMATE.start_mp_add_#t~nondet3#1_40| Int) (|v_ULTIMATE.start_mp_add_~r2~0#1_62| Int)) (and (or (and (= (* 16777216 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_72| 256)) |ULTIMATE.start_mp_add_#res#1|) (= (mod |v_ULTIMATE.start_mp_add_#t~nondet2#1_41| 4294967296) 0)) (and (or (and (= |v_ULTIMATE.start_mp_add_#t~nondet2#1_41| |ULTIMATE.start_mp_add_#res#1|) (= 0 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_72| 256))) (and (<= (mod |v_ULTIMATE.start_mp_add_#t~nondet3#1_40| 4294967296) (+ (* 16777216 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_72| 256)) (mod |v_ULTIMATE.start_mp_add_#t~nondet2#1_41| 4294967296))) (not (= 0 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_72| 256))) (= |v_ULTIMATE.start_mp_add_#t~nondet3#1_40| |ULTIMATE.start_mp_add_#res#1|) (<= (* 16777216 (mod |v_ULTIMATE.start_mp_add_~r3~0#1_72| 256)) (mod |v_ULTIMATE.start_mp_add_#t~nondet3#1_40| 4294967296)))) (not (= (mod |v_ULTIMATE.start_mp_add_#t~nondet2#1_41| 4294967296) 0)))) (or (and (= |v_ULTIMATE.start_mp_add_#t~nondet1#1_42| (* 256 (mod |v_ULTIMATE.start_mp_add_~r1~0#1_58| 256))) (= (mod |v_ULTIMATE.start_mp_add_~r0~0#1_62| 256) 0)) (and (= (mod |v_ULTIMATE.start_mp_add_~r1~0#1_58| 256) 0) (= (mod |v_ULTIMATE.start_mp_add_~r0~0#1_62| 256) |v_ULTIMATE.start_mp_add_#t~nondet1#1_42|)) (and (<= |v_ULTIMATE.start_mp_add_#t~nondet1#1_50| (+ (mod |v_ULTIMATE.start_mp_add_~r0~0#1_62| 256) (* 256 (mod |v_ULTIMATE.start_mp_add_~r1~0#1_58| 256)))) (<= (* 256 (mod |v_ULTIMATE.start_mp_add_~r1~0#1_58| 256)) |v_ULTIMATE.start_mp_add_#t~nondet1#1_50|) (<= (mod |v_ULTIMATE.start_mp_add_~r0~0#1_62| 256) |v_ULTIMATE.start_mp_add_#t~nondet1#1_50|) (= |v_ULTIMATE.start_mp_add_#t~nondet1#1_50| |v_ULTIMATE.start_mp_add_#t~nondet1#1_42|))) (or (and (= |v_ULTIMATE.start_mp_add_#t~nondet1#1_42| 0) (= |v_ULTIMATE.start_mp_add_#t~nondet2#1_41| (* 65536 (mod |v_ULTIMATE.start_mp_add_~r2~0#1_62| 256)))) (and (<= (* 65536 (mod |v_ULTIMATE.start_mp_add_~r2~0#1_62| 256)) |v_ULTIMATE.start_mp_add_#t~nondet2#1_50|) (<= |v_ULTIMATE.start_mp_add_#t~nondet2#1_50| (+ |v_ULTIMATE.start_mp_add_#t~nondet1#1_42| (* 65536 (mod |v_ULTIMATE.start_mp_add_~r2~0#1_62| 256)))) (= |v_ULTIMATE.start_mp_add_#t~nondet2#1_41| |v_ULTIMATE.start_mp_add_#t~nondet2#1_50|) (<= |v_ULTIMATE.start_mp_add_#t~nondet1#1_42| |v_ULTIMATE.start_mp_add_#t~nondet2#1_50|)) (and (= (mod |v_ULTIMATE.start_mp_add_~r2~0#1_62| 256) 0) (= |v_ULTIMATE.start_mp_add_#t~nondet1#1_42| |v_ULTIMATE.start_mp_add_#t~nondet2#1_41|))))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (not (= (mod (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) 4294967296) (mod |ULTIMATE.start_main_~r~1#1| 4294967296))) (exists ((|v_ULTIMATE.start_mp_add_~carry~0#1_56| Int)) (= (mod |v_ULTIMATE.start_mp_add_~carry~0#1_56| 65536) 0)) (= |ULTIMATE.start_main_~r~1#1| |ULTIMATE.start_mp_add_#res#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-12-02 19:20:09,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:20:09,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:20:09,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-02 19:20:09,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027166803] [2023-12-02 19:20:09,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:09,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:20:09,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:20:09,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:20:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2023-12-02 19:20:09,543 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:09,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:09,646 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2023-12-02 19:20:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:20:09,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 19:20:09,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:09,647 INFO L225 Difference]: With dead ends: 17 [2023-12-02 19:20:09,648 INFO L226 Difference]: Without dead ends: 14 [2023-12-02 19:20:09,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2023-12-02 19:20:09,650 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:09,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-02 19:20:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-02 19:20:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2023-12-02 19:20:09,656 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 6 [2023-12-02 19:20:09,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:09,657 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2023-12-02 19:20:09,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2023-12-02 19:20:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 19:20:09,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:09,658 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2023-12-02 19:20:09,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:09,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:09,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:09,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:09,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1371423966, now seen corresponding path program 2 times [2023-12-02 19:20:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:20:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357599413] [2023-12-02 19:20:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:09,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:20:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:10,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:20:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:11,228 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 19:20:11,229 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:20:11,230 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:20:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:20:11,235 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-12-02 19:20:11,238 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:20:11,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:20:11 BoogieIcfgContainer [2023-12-02 19:20:11,271 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:20:11,271 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:20:11,271 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:20:11,272 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:20:11,272 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:03" (3/4) ... [2023-12-02 19:20:11,274 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 19:20:11,275 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:20:11,276 INFO L158 Benchmark]: Toolchain (without parser) took 9288.12ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 144.4MB in the beginning and 119.5MB in the end (delta: 24.9MB). Peak memory consumption was 110.8MB. Max. memory is 16.1GB. [2023-12-02 19:20:11,276 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:11,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.58ms. Allocated memory is still 188.7MB. Free memory was 144.4MB in the beginning and 130.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 19:20:11,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.12ms. Allocated memory is still 188.7MB. Free memory was 130.7MB in the beginning and 127.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:11,278 INFO L158 Benchmark]: Boogie Preprocessor took 35.86ms. Allocated memory is still 188.7MB. Free memory was 127.6MB in the beginning and 126.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:11,278 INFO L158 Benchmark]: RCFGBuilder took 687.65ms. Allocated memory is still 188.7MB. Free memory was 126.5MB in the beginning and 71.0MB in the end (delta: 55.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-12-02 19:20:11,279 INFO L158 Benchmark]: TraceAbstraction took 8194.80ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 71.0MB in the beginning and 120.5MB in the end (delta: -49.5MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2023-12-02 19:20:11,280 INFO L158 Benchmark]: Witness Printer took 3.90ms. Allocated memory is still 272.6MB. Free memory was 120.5MB in the beginning and 119.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:11,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.58ms. Allocated memory is still 188.7MB. Free memory was 144.4MB in the beginning and 130.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.12ms. Allocated memory is still 188.7MB. Free memory was 130.7MB in the beginning and 127.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.86ms. Allocated memory is still 188.7MB. Free memory was 127.6MB in the beginning and 126.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 687.65ms. Allocated memory is still 188.7MB. Free memory was 126.5MB in the beginning and 71.0MB in the end (delta: 55.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8194.80ms. Allocated memory was 188.7MB in the beginning and 272.6MB in the end (delta: 83.9MB). Free memory was 71.0MB in the beginning and 120.5MB in the end (delta: -49.5MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * Witness Printer took 3.90ms. Allocated memory is still 272.6MB. Free memory was 120.5MB in the beginning and 119.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 25]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 116. Possible FailurePath: [L124] unsigned int a, b, r; [L126] a = __VERIFIER_nondet_uint() [L127] b = __VERIFIER_nondet_uint() [L129] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 [L63] COND FALSE !(a1 == (unsigned char)0) [L68] nb = (unsigned char)4 [L69] COND FALSE !(b3 == (unsigned char)0) [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=65279, \old(b)=50200581, a0=65279, a1=254, a2=0, a3=0, a=65279, b0=-4244766715, b1=196096, b2=766, b3=2, b=50200581, carry=0, i=0, na=2, nb=4] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND TRUE i < na [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 [L85] COND FALSE !(i == (unsigned char)1) [L86] COND FALSE !(i == (unsigned char)2) [L87] COND FALSE !(i == (unsigned char)3) [L89] COND TRUE i < nb [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 [L91] COND FALSE !(i == (unsigned char)1) [L92] COND FALSE !(i == (unsigned char)2) [L93] COND FALSE !(i == (unsigned char)3) [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum [L100] COND FALSE !(i == (unsigned char)1) [L101] COND FALSE !(i == (unsigned char)2) [L102] COND FALSE !(i == (unsigned char)3) [L104] i = i + (unsigned char)1 VAL [\old(a)=65279, \old(b)=50200581, a0=65279, a1=254, a2=0, a3=0, a=65279, b0=-4244766715, b1=196096, b2=766, b3=2, b=50200581, carry=1, i=1, na=2, nb=4, partial_sum=4, r0=4, r1=4, r2=4, r3=255] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND TRUE i < na [L84] COND FALSE !(i == (unsigned char)0) [L85] COND TRUE i == (unsigned char)1 [L85] partial_sum = partial_sum + a1 [L86] COND FALSE !(i == (unsigned char)2) [L87] COND FALSE !(i == (unsigned char)3) [L89] COND TRUE i < nb [L90] COND FALSE !(i == (unsigned char)0) [L91] COND TRUE i == (unsigned char)1 [L91] partial_sum = partial_sum + b1 [L92] COND FALSE !(i == (unsigned char)2) [L93] COND FALSE !(i == (unsigned char)3) [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 [L99] COND FALSE !(i == (unsigned char)0) [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum [L101] COND FALSE !(i == (unsigned char)2) [L102] COND FALSE !(i == (unsigned char)3) [L104] i = i + (unsigned char)1 VAL [\old(a)=65279, \old(b)=50200581, a0=65279, a1=254, a2=0, a3=0, a=65279, b0=-4244766715, b1=196096, b2=766, b3=2, b=50200581, carry=1, i=2, na=2, nb=4, partial_sum=255, r0=4, r1=255, r2=4, r3=255] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND FALSE !(i < na) [L89] COND TRUE i < nb [L90] COND FALSE !(i == (unsigned char)0) [L91] COND FALSE !(i == (unsigned char)1) [L92] COND TRUE i == (unsigned char)2 [L92] partial_sum = partial_sum + b2 [L93] COND FALSE !(i == (unsigned char)3) [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 [L99] COND FALSE !(i == (unsigned char)0) [L100] COND FALSE !(i == (unsigned char)1) [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum [L102] COND FALSE !(i == (unsigned char)3) [L104] i = i + (unsigned char)1 VAL [\old(a)=65279, \old(b)=50200581, a0=65279, a1=254, a2=0, a3=0, a=65279, b0=-4244766715, b1=196096, b2=766, b3=2, b=50200581, carry=1, i=3, na=2, nb=4, partial_sum=255, r0=4, r1=255, r2=255, r3=255] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 [L83] COND FALSE !(i < na) [L89] COND TRUE i < nb [L90] COND FALSE !(i == (unsigned char)0) [L91] COND FALSE !(i == (unsigned char)1) [L92] COND FALSE !(i == (unsigned char)2) [L93] COND TRUE i == (unsigned char)3 [L93] partial_sum = partial_sum + b3 [L95] COND FALSE !(partial_sum > ((unsigned char)254)) [L99] COND FALSE !(i == (unsigned char)0) [L100] COND FALSE !(i == (unsigned char)1) [L101] COND FALSE !(i == (unsigned char)2) [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum [L104] i = i + (unsigned char)1 VAL [\old(a)=65279, \old(b)=50200581, a0=65279, a1=254, a2=0, a3=0, a=65279, b0=-4244766715, b1=196096, b2=766, b3=2, b=50200581, carry=0, i=4, na=2, nb=4, partial_sum=3, r0=4, r1=255, r2=255, r3=3] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=65279, \old(b)=50200581, a0=65279, a1=254, a2=0, a3=0, a=65279, b0=-4244766715, b1=196096, b2=766, b3=2, b=50200581, carry=0, i=4, na=2, nb=4, partial_sum=3, r0=4, r1=255, r2=255, r3=3] [L107] COND FALSE !(i < (unsigned char)4) [L116] EXPR r0 | (r1 << 8U) [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) [L116] EXPR r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 5 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 115 SizeOfPredicates, 0 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 19:20:11,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dfc9f1e1cbceb1807370dcac22a0449d857eff9a54bdefbc84178983a910e84 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:20:13,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:20:13,369 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 19:20:13,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:20:13,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:20:13,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:20:13,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:20:13,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:20:13,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:20:13,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:20:13,402 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:20:13,403 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:20:13,403 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:20:13,404 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:20:13,405 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:20:13,405 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:20:13,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:20:13,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:20:13,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:20:13,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:20:13,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:20:13,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:20:13,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:20:13,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:20:13,411 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:20:13,411 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 19:20:13,411 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 19:20:13,412 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:20:13,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:20:13,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:20:13,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:20:13,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 19:20:13,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:20:13,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:20:13,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:20:13,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:20:13,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:20:13,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:20:13,415 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 19:20:13,416 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 19:20:13,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:20:13,416 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:20:13,416 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:20:13,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:20:13,417 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dfc9f1e1cbceb1807370dcac22a0449d857eff9a54bdefbc84178983a910e84 [2023-12-02 19:20:13,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:20:13,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:20:13,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:20:13,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:20:13,750 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:20:13,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/bitvector/byte_add-1.i [2023-12-02 19:20:18,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:20:18,873 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:20:18,874 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/sv-benchmarks/c/bitvector/byte_add-1.i [2023-12-02 19:20:18,882 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data/4654e9cb1/cb66f57a49c4482ea50a378db6988b9a/FLAGe0d29c04e [2023-12-02 19:20:18,895 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/data/4654e9cb1/cb66f57a49c4482ea50a378db6988b9a [2023-12-02 19:20:18,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:20:18,900 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:20:18,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:18,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:20:18,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:20:18,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:18" (1/1) ... [2023-12-02 19:20:18,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbe26de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:18, skipping insertion in model container [2023-12-02 19:20:18,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:20:18" (1/1) ... [2023-12-02 19:20:18,943 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:20:19,115 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/sv-benchmarks/c/bitvector/byte_add-1.i[1166,1179] [2023-12-02 19:20:19,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:19,174 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:20:19,189 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/sv-benchmarks/c/bitvector/byte_add-1.i[1166,1179] [2023-12-02 19:20:19,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:20:19,233 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:20:19,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19 WrapperNode [2023-12-02 19:20:19,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:20:19,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:19,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:20:19,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:20:19,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,279 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2023-12-02 19:20:19,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:20:19,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:20:19,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:20:19,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:20:19,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,311 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:20:19,312 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:20:19,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:20:19,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:20:19,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (1/1) ... [2023-12-02 19:20:19,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:20:19,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:19,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:20:19,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:20:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:20:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 19:20:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:20:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:20:19,468 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:20:19,471 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:20:19,754 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:20:19,786 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:20:19,786 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:20:19,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:19 BoogieIcfgContainer [2023-12-02 19:20:19,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:20:19,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:20:19,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:20:19,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:20:19,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:20:18" (1/3) ... [2023-12-02 19:20:19,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669af16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:19, skipping insertion in model container [2023-12-02 19:20:19,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:20:19" (2/3) ... [2023-12-02 19:20:19,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1669af16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:20:19, skipping insertion in model container [2023-12-02 19:20:19,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:19" (3/3) ... [2023-12-02 19:20:19,797 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add-1.i [2023-12-02 19:20:19,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:20:19,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:20:19,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:20:19,873 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@317e4468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:20:19,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:20:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:20:19,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:19,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:19,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:19,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 459643034, now seen corresponding path program 1 times [2023-12-02 19:20:19,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801780464] [2023-12-02 19:20:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:19,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:19,912 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:19,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 19:20:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:20,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 19:20:20,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:20,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:20,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:20,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801780464] [2023-12-02 19:20:20,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801780464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:20,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:20,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:20:20,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938607797] [2023-12-02 19:20:20,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:20,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:20:20,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:20,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:20:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:20:20,082 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:20,107 INFO L93 Difference]: Finished difference Result 50 states and 85 transitions. [2023-12-02 19:20:20,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:20:20,110 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 19:20:20,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:20,117 INFO L225 Difference]: With dead ends: 50 [2023-12-02 19:20:20,117 INFO L226 Difference]: Without dead ends: 36 [2023-12-02 19:20:20,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:20:20,122 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:20,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:20:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-02 19:20:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-02 19:20:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2023-12-02 19:20:20,152 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 10 [2023-12-02 19:20:20,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:20,153 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2023-12-02 19:20:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2023-12-02 19:20:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:20:20,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:20,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:20,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:20,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:20,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:20,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash 371044600, now seen corresponding path program 1 times [2023-12-02 19:20:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455554079] [2023-12-02 19:20:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:20,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:20,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:20,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:20,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 19:20:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:20,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:20:20,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:20,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:20,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:20,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455554079] [2023-12-02 19:20:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455554079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:20,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:20,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:20:20,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107992248] [2023-12-02 19:20:20,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:20,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:20:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:20:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:20:20,446 INFO L87 Difference]: Start difference. First operand 36 states and 62 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:20,634 INFO L93 Difference]: Finished difference Result 109 states and 195 transitions. [2023-12-02 19:20:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:20:20,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 19:20:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:20,636 INFO L225 Difference]: With dead ends: 109 [2023-12-02 19:20:20,636 INFO L226 Difference]: Without dead ends: 82 [2023-12-02 19:20:20,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:20:20,639 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 88 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:20,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 122 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:20,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-02 19:20:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2023-12-02 19:20:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-12-02 19:20:20,653 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 10 [2023-12-02 19:20:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:20,654 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-12-02 19:20:20,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-12-02 19:20:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 19:20:20,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:20,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:20,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 19:20:20,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:20,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:20,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -450690481, now seen corresponding path program 1 times [2023-12-02 19:20:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424460549] [2023-12-02 19:20:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:20,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:20,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:20,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 19:20:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:20,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:20:20,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:20,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:20,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424460549] [2023-12-02 19:20:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424460549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:20,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:20,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:20:20,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374456104] [2023-12-02 19:20:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:20:20,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:20,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:20:20,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:20,952 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:21,138 INFO L93 Difference]: Finished difference Result 153 states and 262 transitions. [2023-12-02 19:20:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:20:21,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 19:20:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:21,140 INFO L225 Difference]: With dead ends: 153 [2023-12-02 19:20:21,141 INFO L226 Difference]: Without dead ends: 126 [2023-12-02 19:20:21,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:21,143 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 134 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:21,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 254 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-02 19:20:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 79. [2023-12-02 19:20:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-12-02 19:20:21,158 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 11 [2023-12-02 19:20:21,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:21,158 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-12-02 19:20:21,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-12-02 19:20:21,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:20:21,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:21,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:21,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 19:20:21,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:21,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:21,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -950257841, now seen corresponding path program 1 times [2023-12-02 19:20:21,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:21,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587989900] [2023-12-02 19:20:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:21,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:21,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:21,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 19:20:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:21,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:20:21,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:21,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:21,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:21,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587989900] [2023-12-02 19:20:21,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587989900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:21,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:21,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:20:21,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048042092] [2023-12-02 19:20:21,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:21,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:20:21,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:21,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:20:21,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:20:21,451 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:21,677 INFO L93 Difference]: Finished difference Result 197 states and 329 transitions. [2023-12-02 19:20:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:20:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 19:20:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:21,679 INFO L225 Difference]: With dead ends: 197 [2023-12-02 19:20:21,680 INFO L226 Difference]: Without dead ends: 170 [2023-12-02 19:20:21,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:20:21,682 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 180 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:21,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 479 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:21,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-02 19:20:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 79. [2023-12-02 19:20:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.641025641025641) internal successors, (128), 78 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2023-12-02 19:20:21,695 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 12 [2023-12-02 19:20:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:21,695 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2023-12-02 19:20:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2023-12-02 19:20:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:20:21,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:21,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:21,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 19:20:21,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:21,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:21,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1569702093, now seen corresponding path program 1 times [2023-12-02 19:20:21,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230903250] [2023-12-02 19:20:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:21,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:21,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:21,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:21,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 19:20:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:21,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:20:21,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:21,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:21,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230903250] [2023-12-02 19:20:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230903250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:21,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:21,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:20:21,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465970688] [2023-12-02 19:20:21,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:21,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:20:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:21,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:20:21,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:20:21,991 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:22,201 INFO L93 Difference]: Finished difference Result 212 states and 342 transitions. [2023-12-02 19:20:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:20:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 19:20:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:22,205 INFO L225 Difference]: With dead ends: 212 [2023-12-02 19:20:22,205 INFO L226 Difference]: Without dead ends: 185 [2023-12-02 19:20:22,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:20:22,206 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 218 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:22,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 619 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-02 19:20:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 85. [2023-12-02 19:20:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.5119047619047619) internal successors, (127), 84 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2023-12-02 19:20:22,218 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 12 [2023-12-02 19:20:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:22,219 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2023-12-02 19:20:22,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2023-12-02 19:20:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 19:20:22,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:22,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:22,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:22,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:22,428 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:22,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash -171126915, now seen corresponding path program 1 times [2023-12-02 19:20:22,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:22,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394115818] [2023-12-02 19:20:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:22,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:22,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:22,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:22,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 19:20:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:22,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:20:22,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:22,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:22,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394115818] [2023-12-02 19:20:22,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394115818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:22,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:20:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822537366] [2023-12-02 19:20:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:22,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:20:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:20:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:20:22,502 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:22,604 INFO L93 Difference]: Finished difference Result 236 states and 352 transitions. [2023-12-02 19:20:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:20:22,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-02 19:20:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:22,606 INFO L225 Difference]: With dead ends: 236 [2023-12-02 19:20:22,606 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 19:20:22,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:20:22,608 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 89 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:22,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 137 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:22,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 19:20:22,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 95. [2023-12-02 19:20:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 94 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 140 transitions. [2023-12-02 19:20:22,621 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 140 transitions. Word has length 23 [2023-12-02 19:20:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:22,622 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 140 transitions. [2023-12-02 19:20:22,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 140 transitions. [2023-12-02 19:20:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 19:20:22,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:22,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:22,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 19:20:22,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:22,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:22,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1205485431, now seen corresponding path program 1 times [2023-12-02 19:20:22,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:22,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144079817] [2023-12-02 19:20:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:22,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:22,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:22,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:22,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 19:20:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:22,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:20:22,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:22,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:22,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144079817] [2023-12-02 19:20:22,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144079817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:22,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:22,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:20:22,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528328937] [2023-12-02 19:20:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:22,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:20:22,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:20:22,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:22,912 INFO L87 Difference]: Start difference. First operand 95 states and 140 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:23,031 INFO L93 Difference]: Finished difference Result 314 states and 468 transitions. [2023-12-02 19:20:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:20:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-02 19:20:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:23,033 INFO L225 Difference]: With dead ends: 314 [2023-12-02 19:20:23,033 INFO L226 Difference]: Without dead ends: 245 [2023-12-02 19:20:23,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:23,035 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 142 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:23,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 290 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-02 19:20:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 95. [2023-12-02 19:20:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 94 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 140 transitions. [2023-12-02 19:20:23,047 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 140 transitions. Word has length 24 [2023-12-02 19:20:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:23,047 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 140 transitions. [2023-12-02 19:20:23,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 140 transitions. [2023-12-02 19:20:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 19:20:23,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:23,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:23,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 19:20:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:23,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:23,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:23,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1409794344, now seen corresponding path program 1 times [2023-12-02 19:20:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:23,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267807531] [2023-12-02 19:20:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:23,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:23,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:23,258 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:23,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 19:20:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:23,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:20:23,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:23,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:23,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:23,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267807531] [2023-12-02 19:20:23,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267807531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:20:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390834677] [2023-12-02 19:20:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:23,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:20:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:20:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:20:23,350 INFO L87 Difference]: Start difference. First operand 95 states and 140 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:23,530 INFO L93 Difference]: Finished difference Result 386 states and 572 transitions. [2023-12-02 19:20:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:20:23,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 19:20:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:23,533 INFO L225 Difference]: With dead ends: 386 [2023-12-02 19:20:23,533 INFO L226 Difference]: Without dead ends: 317 [2023-12-02 19:20:23,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:20:23,534 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 240 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:23,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 711 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-02 19:20:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 155. [2023-12-02 19:20:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.4610389610389611) internal successors, (225), 154 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 225 transitions. [2023-12-02 19:20:23,550 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 225 transitions. Word has length 25 [2023-12-02 19:20:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:23,550 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 225 transitions. [2023-12-02 19:20:23,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 225 transitions. [2023-12-02 19:20:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 19:20:23,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:23,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:23,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:23,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:23,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:23,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1628649062, now seen corresponding path program 1 times [2023-12-02 19:20:23,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:23,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78643260] [2023-12-02 19:20:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:23,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:23,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:23,763 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:23,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 19:20:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:23,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:20:23,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:23,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:23,855 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78643260] [2023-12-02 19:20:23,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78643260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:23,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:20:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933657849] [2023-12-02 19:20:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:23,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:20:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:20:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:20:23,858 INFO L87 Difference]: Start difference. First operand 155 states and 225 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:24,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:24,002 INFO L93 Difference]: Finished difference Result 384 states and 566 transitions. [2023-12-02 19:20:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:20:24,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 19:20:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:24,004 INFO L225 Difference]: With dead ends: 384 [2023-12-02 19:20:24,005 INFO L226 Difference]: Without dead ends: 315 [2023-12-02 19:20:24,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:20:24,006 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 195 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:24,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 405 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:20:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-02 19:20:24,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 145. [2023-12-02 19:20:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4583333333333333) internal successors, (210), 144 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 210 transitions. [2023-12-02 19:20:24,017 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 210 transitions. Word has length 25 [2023-12-02 19:20:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:24,017 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 210 transitions. [2023-12-02 19:20:24,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:24,018 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 210 transitions. [2023-12-02 19:20:24,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 19:20:24,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:24,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:24,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:24,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:24,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:24,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1173091825, now seen corresponding path program 1 times [2023-12-02 19:20:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:24,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469834283] [2023-12-02 19:20:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:24,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:24,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:24,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:24,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 19:20:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:24,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:20:24,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:24,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:24,343 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:24,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469834283] [2023-12-02 19:20:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469834283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:20:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888452813] [2023-12-02 19:20:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:20:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:20:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:24,345 INFO L87 Difference]: Start difference. First operand 145 states and 210 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:24,570 INFO L93 Difference]: Finished difference Result 330 states and 497 transitions. [2023-12-02 19:20:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:20:24,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-02 19:20:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:24,572 INFO L225 Difference]: With dead ends: 330 [2023-12-02 19:20:24,572 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 19:20:24,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:24,574 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:24,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 132 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 19:20:24,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 254. [2023-12-02 19:20:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4110671936758894) internal successors, (357), 253 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2023-12-02 19:20:24,587 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 27 [2023-12-02 19:20:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:24,588 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2023-12-02 19:20:24,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2023-12-02 19:20:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 19:20:24,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:24,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:24,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 19:20:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:24,792 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:24,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1213817478, now seen corresponding path program 1 times [2023-12-02 19:20:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:24,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020406276] [2023-12-02 19:20:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:24,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:24,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:24,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 19:20:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:24,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:20:24,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:24,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:24,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:24,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020406276] [2023-12-02 19:20:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020406276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:24,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 19:20:24,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696793790] [2023-12-02 19:20:24,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:24,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:20:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:20:24,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:20:24,909 INFO L87 Difference]: Start difference. First operand 254 states and 357 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:25,209 INFO L93 Difference]: Finished difference Result 440 states and 645 transitions. [2023-12-02 19:20:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:20:25,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-02 19:20:25,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:25,212 INFO L225 Difference]: With dead ends: 440 [2023-12-02 19:20:25,212 INFO L226 Difference]: Without dead ends: 369 [2023-12-02 19:20:25,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:20:25,213 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 112 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:25,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 240 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:20:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-02 19:20:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 254. [2023-12-02 19:20:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4110671936758894) internal successors, (357), 253 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 357 transitions. [2023-12-02 19:20:25,227 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 357 transitions. Word has length 28 [2023-12-02 19:20:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:25,227 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 357 transitions. [2023-12-02 19:20:25,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,227 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 357 transitions. [2023-12-02 19:20:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 19:20:25,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:25,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:25,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 19:20:25,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:25,429 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:25,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1570895750, now seen corresponding path program 1 times [2023-12-02 19:20:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007161789] [2023-12-02 19:20:25,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:25,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:25,431 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:25,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 19:20:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:25,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:20:25,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:25,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:25,554 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:25,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007161789] [2023-12-02 19:20:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007161789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:25,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:20:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275683185] [2023-12-02 19:20:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:25,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 19:20:25,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 19:20:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:20:25,556 INFO L87 Difference]: Start difference. First operand 254 states and 357 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:25,800 INFO L93 Difference]: Finished difference Result 486 states and 699 transitions. [2023-12-02 19:20:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 19:20:25,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-02 19:20:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:25,803 INFO L225 Difference]: With dead ends: 486 [2023-12-02 19:20:25,803 INFO L226 Difference]: Without dead ends: 415 [2023-12-02 19:20:25,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:20:25,805 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 180 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:25,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 418 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-02 19:20:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 190. [2023-12-02 19:20:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.3915343915343916) internal successors, (263), 189 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 263 transitions. [2023-12-02 19:20:25,821 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 263 transitions. Word has length 29 [2023-12-02 19:20:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:25,822 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 263 transitions. [2023-12-02 19:20:25,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 263 transitions. [2023-12-02 19:20:25,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 19:20:25,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:25,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:25,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 19:20:26,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:26,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:26,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1436882244, now seen corresponding path program 1 times [2023-12-02 19:20:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:26,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780767794] [2023-12-02 19:20:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:26,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:26,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:26,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:26,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 19:20:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:26,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:20:26,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:26,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:26,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780767794] [2023-12-02 19:20:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780767794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:26,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:20:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:20:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982662385] [2023-12-02 19:20:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:20:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:20:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:26,134 INFO L87 Difference]: Start difference. First operand 190 states and 263 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:26,355 INFO L93 Difference]: Finished difference Result 426 states and 602 transitions. [2023-12-02 19:20:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:20:26,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-02 19:20:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:26,358 INFO L225 Difference]: With dead ends: 426 [2023-12-02 19:20:26,358 INFO L226 Difference]: Without dead ends: 324 [2023-12-02 19:20:26,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:20:26,359 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 86 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:26,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 134 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:20:26,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-02 19:20:26,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 288. [2023-12-02 19:20:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.3797909407665505) internal successors, (396), 287 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 396 transitions. [2023-12-02 19:20:26,377 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 396 transitions. Word has length 29 [2023-12-02 19:20:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:26,378 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 396 transitions. [2023-12-02 19:20:26,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 396 transitions. [2023-12-02 19:20:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 19:20:26,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:26,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:26,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 19:20:26,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:26,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:26,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash -80808138, now seen corresponding path program 1 times [2023-12-02 19:20:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662223086] [2023-12-02 19:20:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:26,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:26,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:26,581 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:26,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 19:20:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:26,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:20:26,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:26,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:26,826 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:26,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662223086] [2023-12-02 19:20:26,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662223086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:26,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [167120568] [2023-12-02 19:20:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:20:26,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:20:26,829 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:20:26,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 19:20:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:26,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:20:26,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:26,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:20:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [167120568] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:20:26,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:20:26,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 11 [2023-12-02 19:20:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890253260] [2023-12-02 19:20:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:20:26,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:20:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:20:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:20:26,918 INFO L87 Difference]: Start difference. First operand 288 states and 396 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:26,953 INFO L93 Difference]: Finished difference Result 400 states and 547 transitions. [2023-12-02 19:20:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:20:26,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-02 19:20:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:26,956 INFO L225 Difference]: With dead ends: 400 [2023-12-02 19:20:26,956 INFO L226 Difference]: Without dead ends: 372 [2023-12-02 19:20:26,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:20:26,957 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:26,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 116 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:20:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-02 19:20:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 348. [2023-12-02 19:20:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.38328530259366) internal successors, (480), 347 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 480 transitions. [2023-12-02 19:20:26,977 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 480 transitions. Word has length 30 [2023-12-02 19:20:26,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:26,977 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 480 transitions. [2023-12-02 19:20:26,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 480 transitions. [2023-12-02 19:20:26,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 19:20:26,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:26,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:26,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:27,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:27,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 19:20:27,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:27,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:27,381 INFO L85 PathProgramCache]: Analyzing trace with hash 620256440, now seen corresponding path program 1 times [2023-12-02 19:20:27,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:27,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997752202] [2023-12-02 19:20:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:27,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:27,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:27,383 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:27,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 19:20:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:27,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:20:27,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:27,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:27,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997752202] [2023-12-02 19:20:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997752202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [365564954] [2023-12-02 19:20:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:27,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:20:27,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:20:27,626 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:20:27,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 19:20:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:27,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:20:27,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:27,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [365564954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:27,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013768067] [2023-12-02 19:20:27,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:27,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:27,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:27,889 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:20:27,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 19:20:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:27,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:20:27,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:27,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:20:28,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013768067] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:28,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:20:28,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 14 [2023-12-02 19:20:28,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364717025] [2023-12-02 19:20:28,029 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:28,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 19:20:28,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 19:20:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-02 19:20:28,030 INFO L87 Difference]: Start difference. First operand 348 states and 480 transitions. Second operand has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:29,793 INFO L93 Difference]: Finished difference Result 1749 states and 2721 transitions. [2023-12-02 19:20:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-02 19:20:29,794 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-02 19:20:29,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:29,802 INFO L225 Difference]: With dead ends: 1749 [2023-12-02 19:20:29,803 INFO L226 Difference]: Without dead ends: 1434 [2023-12-02 19:20:29,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=456, Invalid=1104, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 19:20:29,805 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1160 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:29,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 331 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 19:20:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2023-12-02 19:20:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1032. [2023-12-02 19:20:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1031 states have (on average 1.5354025218234724) internal successors, (1583), 1031 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1583 transitions. [2023-12-02 19:20:29,877 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1583 transitions. Word has length 30 [2023-12-02 19:20:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:29,878 INFO L495 AbstractCegarLoop]: Abstraction has 1032 states and 1583 transitions. [2023-12-02 19:20:29,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1583 transitions. [2023-12-02 19:20:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 19:20:29,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:29,880 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:29,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 19:20:30,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:30,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 19:20:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:30,483 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:30,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1692501362, now seen corresponding path program 1 times [2023-12-02 19:20:30,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642013673] [2023-12-02 19:20:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:30,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:30,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:30,484 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:30,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 19:20:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:30,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 19:20:30,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:20:32,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:20:34,421 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642013673] [2023-12-02 19:20:34,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642013673] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1517115377] [2023-12-02 19:20:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:34,422 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:20:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:20:34,422 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:20:34,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 19:20:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:34,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 19:20:34,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:20:35,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:36,245 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:20:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1517115377] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:36,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755325906] [2023-12-02 19:20:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:36,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:36,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:36,246 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:20:36,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 19:20:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:36,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 19:20:36,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:20:37,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:20:37,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755325906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:37,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:20:37,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 35 [2023-12-02 19:20:37,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071735647] [2023-12-02 19:20:37,930 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:37,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 19:20:37,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 19:20:37,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2023-12-02 19:20:37,932 INFO L87 Difference]: Start difference. First operand 1032 states and 1583 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:45,911 INFO L93 Difference]: Finished difference Result 3397 states and 5091 transitions. [2023-12-02 19:20:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-02 19:20:45,912 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-02 19:20:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:45,931 INFO L225 Difference]: With dead ends: 3397 [2023-12-02 19:20:45,931 INFO L226 Difference]: Without dead ends: 3289 [2023-12-02 19:20:45,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1414, Invalid=4136, Unknown=0, NotChecked=0, Total=5550 [2023-12-02 19:20:45,935 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1770 mSDsluCounter, 4634 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 4992 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:45,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 4992 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 19:20:45,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2023-12-02 19:20:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 1181. [2023-12-02 19:20:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1180 states have (on average 1.5161016949152541) internal successors, (1789), 1180 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1789 transitions. [2023-12-02 19:20:46,081 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1789 transitions. Word has length 49 [2023-12-02 19:20:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:46,082 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1789 transitions. [2023-12-02 19:20:46,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1789 transitions. [2023-12-02 19:20:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 19:20:46,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:46,084 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:46,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-02 19:20:46,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-02 19:20:46,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 19:20:46,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:46,685 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:46,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1105695348, now seen corresponding path program 1 times [2023-12-02 19:20:46,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:46,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724578956] [2023-12-02 19:20:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:46,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:46,687 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:46,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 19:20:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:46,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:20:46,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:20:46,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:20:46,777 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:20:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724578956] [2023-12-02 19:20:46,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724578956] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [765360243] [2023-12-02 19:20:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:46,778 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:20:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:20:46,779 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:20:46,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 19:20:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:46,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:20:46,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:20:46,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:20:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [765360243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:46,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740475722] [2023-12-02 19:20:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:46,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:46,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:20:46,937 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:20:46,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 19:20:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:20:46,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:20:46,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:20:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:20:47,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:20:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:20:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740475722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:20:47,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:20:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8, 5, 5, 5] total 10 [2023-12-02 19:20:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122850937] [2023-12-02 19:20:47,051 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:20:47,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:20:47,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:20:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:20:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:20:47,052 INFO L87 Difference]: Start difference. First operand 1181 states and 1789 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:20:48,225 INFO L93 Difference]: Finished difference Result 3307 states and 5159 transitions. [2023-12-02 19:20:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 19:20:48,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-02 19:20:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:20:48,236 INFO L225 Difference]: With dead ends: 3307 [2023-12-02 19:20:48,236 INFO L226 Difference]: Without dead ends: 1945 [2023-12-02 19:20:48,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 286 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2023-12-02 19:20:48,239 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 669 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 19:20:48,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 313 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 19:20:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2023-12-02 19:20:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1625. [2023-12-02 19:20:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 1.3805418719211822) internal successors, (2242), 1624 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2242 transitions. [2023-12-02 19:20:48,438 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2242 transitions. Word has length 49 [2023-12-02 19:20:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:20:48,438 INFO L495 AbstractCegarLoop]: Abstraction has 1625 states and 2242 transitions. [2023-12-02 19:20:48,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:20:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2242 transitions. [2023-12-02 19:20:48,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 19:20:48,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:20:48,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:48,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-02 19:20:48,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-02 19:20:48,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 19:20:49,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:20:49,041 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:20:49,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:20:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 792282682, now seen corresponding path program 1 times [2023-12-02 19:20:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:20:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76621730] [2023-12-02 19:20:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:20:49,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:49,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:20:49,043 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:20:49,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-02 19:20:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:49,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 19:20:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 19:20:49,135 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 19:20:49,135 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 19:20:49,136 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:20:49,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-02 19:20:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:20:49,343 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:20:49,346 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:20:49,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:20:49 BoogieIcfgContainer [2023-12-02 19:20:49,411 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:20:49,411 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:20:49,411 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:20:49,411 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:20:49,412 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:20:19" (3/4) ... [2023-12-02 19:20:49,412 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 19:20:49,493 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:20:49,493 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:20:49,494 INFO L158 Benchmark]: Toolchain (without parser) took 30593.81ms. Allocated memory was 100.7MB in the beginning and 211.8MB in the end (delta: 111.1MB). Free memory was 77.1MB in the beginning and 105.6MB in the end (delta: -28.5MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2023-12-02 19:20:49,494 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:20:49,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.81ms. Allocated memory is still 100.7MB. Free memory was 76.9MB in the beginning and 64.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 19:20:49,495 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.79ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 62.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:49,495 INFO L158 Benchmark]: Boogie Preprocessor took 31.01ms. Allocated memory is still 100.7MB. Free memory was 62.1MB in the beginning and 60.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:20:49,496 INFO L158 Benchmark]: RCFGBuilder took 475.08ms. Allocated memory is still 100.7MB. Free memory was 60.4MB in the beginning and 67.4MB in the end (delta: -7.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-12-02 19:20:49,496 INFO L158 Benchmark]: TraceAbstraction took 29620.49ms. Allocated memory was 100.7MB in the beginning and 211.8MB in the end (delta: 111.1MB). Free memory was 66.9MB in the beginning and 111.9MB in the end (delta: -45.0MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2023-12-02 19:20:49,496 INFO L158 Benchmark]: Witness Printer took 82.01ms. Allocated memory is still 211.8MB. Free memory was 111.9MB in the beginning and 105.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:20:49,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 65.0MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.81ms. Allocated memory is still 100.7MB. Free memory was 76.9MB in the beginning and 64.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.79ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 62.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.01ms. Allocated memory is still 100.7MB. Free memory was 62.1MB in the beginning and 60.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 475.08ms. Allocated memory is still 100.7MB. Free memory was 60.4MB in the beginning and 67.4MB in the end (delta: -7.0MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * TraceAbstraction took 29620.49ms. Allocated memory was 100.7MB in the beginning and 211.8MB in the end (delta: 111.1MB). Free memory was 66.9MB in the beginning and 111.9MB in the end (delta: -45.0MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. * Witness Printer took 82.01ms. Allocated memory is still 211.8MB. Free memory was 111.9MB in the beginning and 105.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 25]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L124] unsigned int a, b, r; [L126] a = __VERIFIER_nondet_uint() [L127] b = __VERIFIER_nondet_uint() [L129] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=4] [L59] COND TRUE a3 == (unsigned char)0 [L60] na = na - 1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=3] [L61] COND TRUE a2 == (unsigned char)0 [L62] na = na - 1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=2] [L63] COND TRUE a1 == (unsigned char)0 [L64] na = na - 1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=1] [L68] nb = (unsigned char)4 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=1, nb=4] [L69] COND TRUE b3 == (unsigned char)0 [L70] nb = nb - 1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=1, nb=3] [L71] COND TRUE b2 == (unsigned char)0 [L72] nb = nb - 1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=1, nb=2] [L73] COND TRUE b1 == (unsigned char)0 [L74] nb = nb - 1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, na=1, nb=1] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=0] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=0] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=0] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=0] [L89] COND TRUE i < nb VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=0] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=255] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=255] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=255] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=0, na=1, nb=1, partial_sum=255] [L95] COND TRUE partial_sum > ((unsigned char)254) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=1, i=0, na=1, nb=1, partial_sum=255] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=1, i=0, na=1, nb=1, partial_sum=255, r0=-1] [L104] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=1, i=1, na=1, nb=1, partial_sum=255, r0=-1] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L83] COND FALSE !(i < na) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L89] COND FALSE !(i < nb) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L95] COND FALSE !(partial_sum > ((unsigned char)254)) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=1, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L104] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L107] COND TRUE i < (unsigned char)4 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L108] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L109] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1] [L110] COND TRUE i == (unsigned char)2 [L110] r2 = (unsigned char)0 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L111] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=2, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L113] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L107] COND TRUE i < (unsigned char)4 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L108] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L109] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L110] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0] [L111] COND TRUE i == (unsigned char)3 [L111] r3 = (unsigned char)0 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=3, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L113] i = i + (unsigned char)1 VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=4, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=0, \old(b)=255, a0=0, a1=0, a2=0, a3=0, a=0, b0=-1, b1=0, b2=0, b3=0, b=255, carry=0, i=4, na=1, nb=1, partial_sum=1, r0=-1, r1=1, r2=0, r3=0] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; [L129] RET, EXPR mp_add(a, b) [L129] r = mp_add(a, b) [L131] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.5s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5333 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5333 mSDsluCounter, 9754 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7870 mSDsCounter, 536 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7942 IncrementalHoareTripleChecker+Invalid, 8478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 536 mSolverCounterUnsat, 1884 mSDtfsCounter, 7942 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1184 GetRequests, 989 SyntacticMatches, 9 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1625occurred in iteration=17, InterpolantAutomatonStates: 177, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 4030 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 761 NumberOfCodeBlocks, 761 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1089 ConstructedInterpolants, 0 QuantifiedInterpolants, 14737 SizeOfPredicates, 58 NumberOfNonLiveVariables, 1579 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 34 InterpolantComputations, 14 PerfectInterpolantSequences, 186/281 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 19:20:49,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9119cca3-1411-4910-9835-ada4db190b9a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE