./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-tiling/pr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/pr3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:00:51,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:00:51,786 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:00:51,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:00:51,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:00:51,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:00:51,833 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:00:51,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:00:51,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:00:51,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:00:51,840 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:00:51,841 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:00:51,842 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:00:51,843 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:00:51,844 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:00:51,844 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:00:51,845 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:00:51,845 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:00:51,846 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:00:51,846 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:00:51,847 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:00:51,847 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:00:51,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:00:51,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:00:51,849 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:00:51,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:00:51,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:00:51,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:00:51,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:00:51,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:00:51,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:00:51,853 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:00:51,853 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:00:51,853 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:00:51,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:00:51,854 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:00:51,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:00:51,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:00:51,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:51,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:00:51,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:00:51,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:00:51,855 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:00:51,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:00:51,856 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:00:51,857 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:00:51,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:00:51,857 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_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73efddcda095c52d9900d13088d1ec70520de6007541f46343a568e878cf2ed4 [2023-11-19 05:00:52,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:00:52,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:00:52,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:00:52,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:00:52,226 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:00:52,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/array-tiling/pr3.c [2023-11-19 05:00:55,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:00:55,535 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:00:55,536 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/sv-benchmarks/c/array-tiling/pr3.c [2023-11-19 05:00:55,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/data/baa793eb5/f6b3f91efadf4c2c9fbd8ccb8b94ac9a/FLAG0b28aaea7 [2023-11-19 05:00:55,556 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/data/baa793eb5/f6b3f91efadf4c2c9fbd8ccb8b94ac9a [2023-11-19 05:00:55,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:00:55,560 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:00:55,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:55,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:00:55,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:00:55,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48df4910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55, skipping insertion in model container [2023-11-19 05:00:55,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,588 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:00:55,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:55,748 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:00:55,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:00:55,786 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:00:55,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55 WrapperNode [2023-11-19 05:00:55,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:00:55,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:55,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:00:55,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:00:55,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,829 INFO L138 Inliner]: procedures = 15, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2023-11-19 05:00:55,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:00:55,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:00:55,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:00:55,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:00:55,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,852 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,858 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:00:55,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:00:55,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:00:55,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:00:55,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (1/1) ... [2023-11-19 05:00:55,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:00:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:55,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:00:55,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:00:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:00:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:00:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:00:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:00:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:00:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:00:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:00:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:00:56,009 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:00:56,011 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:00:56,311 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:00:56,397 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:00:56,397 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:00:56,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:56 BoogieIcfgContainer [2023-11-19 05:00:56,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:00:56,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:00:56,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:00:56,409 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:00:56,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:00:55" (1/3) ... [2023-11-19 05:00:56,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd68cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:56, skipping insertion in model container [2023-11-19 05:00:56,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:00:55" (2/3) ... [2023-11-19 05:00:56,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cd68cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:00:56, skipping insertion in model container [2023-11-19 05:00:56,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:00:56" (3/3) ... [2023-11-19 05:00:56,412 INFO L112 eAbstractionObserver]: Analyzing ICFG pr3.c [2023-11-19 05:00:56,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:00:56,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 05:00:56,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:00:56,481 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;@6df63fc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:00:56,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-19 05:00:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 72 states have internal predecessors, (80), 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) [2023-11-19 05:00:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:00:56,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:56,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:00:56,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:56,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:56,498 INFO L85 PathProgramCache]: Analyzing trace with hash 5401895, now seen corresponding path program 1 times [2023-11-19 05:00:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565334912] [2023-11-19 05:00:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:56,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:57,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:57,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565334912] [2023-11-19 05:00:57,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565334912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:57,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:57,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:57,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546844141] [2023-11-19 05:00:57,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:57,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:57,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:57,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:57,097 INFO L87 Difference]: Start difference. First operand has 73 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 72 states have internal predecessors, (80), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2023-11-19 05:00:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:57,180 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2023-11-19 05:00:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:57,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2023-11-19 05:00:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:57,192 INFO L225 Difference]: With dead ends: 87 [2023-11-19 05:00:57,192 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 05:00:57,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:57,204 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 147 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:57,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 69 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 05:00:57,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-19 05:00:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 40 states have (on average 1.825) internal successors, (73), 68 states have internal predecessors, (73), 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) [2023-11-19 05:00:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2023-11-19 05:00:57,277 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 4 [2023-11-19 05:00:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:57,277 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2023-11-19 05:00:57,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2023-11-19 05:00:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2023-11-19 05:00:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:00:57,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:57,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:00:57,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:00:57,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:57,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash 167458799, now seen corresponding path program 1 times [2023-11-19 05:00:57,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:57,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283964150] [2023-11-19 05:00:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:57,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:57,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:57,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283964150] [2023-11-19 05:00:57,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283964150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:57,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:57,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:57,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526339027] [2023-11-19 05:00:57,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:57,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:00:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:00:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:00:57,608 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2023-11-19 05:00:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:57,661 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2023-11-19 05:00:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:00:57,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 [2023-11-19 05:00:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:57,669 INFO L225 Difference]: With dead ends: 69 [2023-11-19 05:00:57,670 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 05:00:57,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:00:57,678 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 204 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:57,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 64 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:00:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 05:00:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-19 05:00:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.8) internal successors, (72), 67 states have internal predecessors, (72), 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) [2023-11-19 05:00:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2023-11-19 05:00:57,691 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 5 [2023-11-19 05:00:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:57,691 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2023-11-19 05:00:57,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2023-11-19 05:00:57,693 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2023-11-19 05:00:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:00:57,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:57,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:57,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:00:57,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:57,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1986858258, now seen corresponding path program 1 times [2023-11-19 05:00:57,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:57,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961233310] [2023-11-19 05:00:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:57,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:57,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961233310] [2023-11-19 05:00:57,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961233310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:57,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:57,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:00:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448033768] [2023-11-19 05:00:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:00:57,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:00:57,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:57,751 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 05:00:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:57,932 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2023-11-19 05:00:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:00:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-19 05:00:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:57,943 INFO L225 Difference]: With dead ends: 128 [2023-11-19 05:00:57,944 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 05:00:57,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:00:57,951 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 34 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:57,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 56 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:00:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 05:00:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-11-19 05:00:57,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 97 states have internal predecessors, (106), 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) [2023-11-19 05:00:57,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2023-11-19 05:00:57,984 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 8 [2023-11-19 05:00:57,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:57,984 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2023-11-19 05:00:57,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-19 05:00:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2023-11-19 05:00:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:00:57,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:57,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:57,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:00:57,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:57,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1463050081, now seen corresponding path program 1 times [2023-11-19 05:00:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:57,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082552484] [2023-11-19 05:00:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:57,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:58,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:58,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082552484] [2023-11-19 05:00:58,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082552484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:58,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:58,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:58,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608354503] [2023-11-19 05:00:58,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:58,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:58,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:58,103 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-19 05:00:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:58,231 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2023-11-19 05:00:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:58,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-11-19 05:00:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:58,234 INFO L225 Difference]: With dead ends: 103 [2023-11-19 05:00:58,234 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 05:00:58,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:00:58,236 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 3 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:58,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 146 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:00:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 05:00:58,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-19 05:00:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.4931506849315068) internal successors, (109), 100 states have internal predecessors, (109), 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) [2023-11-19 05:00:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2023-11-19 05:00:58,249 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 9 [2023-11-19 05:00:58,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:58,249 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2023-11-19 05:00:58,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-19 05:00:58,250 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2023-11-19 05:00:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:00:58,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:58,250 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:58,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:00:58,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:58,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash -396677590, now seen corresponding path program 1 times [2023-11-19 05:00:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036135695] [2023-11-19 05:00:58,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:58,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:00:58,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:58,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036135695] [2023-11-19 05:00:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036135695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:58,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:58,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:00:58,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823726272] [2023-11-19 05:00:58,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:58,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:58,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:58,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:58,532 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2023-11-19 05:00:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:58,712 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2023-11-19 05:00:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:58,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 12 [2023-11-19 05:00:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:58,714 INFO L225 Difference]: With dead ends: 115 [2023-11-19 05:00:58,714 INFO L226 Difference]: Without dead ends: 106 [2023-11-19 05:00:58,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:58,717 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 105 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:58,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 52 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:00:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-19 05:00:58,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2023-11-19 05:00:58,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 100 states have internal predecessors, (108), 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) [2023-11-19 05:00:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2023-11-19 05:00:58,726 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 12 [2023-11-19 05:00:58,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:58,727 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2023-11-19 05:00:58,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2023-11-19 05:00:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2023-11-19 05:00:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:00:58,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:58,728 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] [2023-11-19 05:00:58,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:00:58,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:58,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:58,730 INFO L85 PathProgramCache]: Analyzing trace with hash 518465454, now seen corresponding path program 1 times [2023-11-19 05:00:58,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:58,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804697273] [2023-11-19 05:00:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:58,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:58,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804697273] [2023-11-19 05:00:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804697273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:58,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:00:58,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:00:58,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819662771] [2023-11-19 05:00:58,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:58,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:00:58,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:00:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:00:58,843 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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) [2023-11-19 05:00:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:59,026 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2023-11-19 05:00:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:00:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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 [2023-11-19 05:00:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:59,031 INFO L225 Difference]: With dead ends: 106 [2023-11-19 05:00:59,031 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 05:00:59,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:00:59,035 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 18 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:59,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 94 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:00:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 05:00:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-19 05:00:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.4605263157894737) internal successors, (111), 103 states have internal predecessors, (111), 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) [2023-11-19 05:00:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2023-11-19 05:00:59,057 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 23 [2023-11-19 05:00:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:59,058 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2023-11-19 05:00:59,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 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) [2023-11-19 05:00:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2023-11-19 05:00:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 05:00:59,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:59,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:59,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:00:59,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:59,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash -34183833, now seen corresponding path program 1 times [2023-11-19 05:00:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120821644] [2023-11-19 05:00:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:59,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:00:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120821644] [2023-11-19 05:00:59,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120821644] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:00:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099912741] [2023-11-19 05:00:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:59,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:59,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:00:59,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:00:59,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:00:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:00:59,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:00:59,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:00:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:00:59,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:00:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099912741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:00:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:00:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-19 05:00:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395955840] [2023-11-19 05:00:59,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:00:59,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:00:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:00:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:00:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:00:59,364 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 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) [2023-11-19 05:00:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:00:59,614 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2023-11-19 05:00:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:00:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 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 [2023-11-19 05:00:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:00:59,616 INFO L225 Difference]: With dead ends: 104 [2023-11-19 05:00:59,616 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 05:00:59,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:00:59,618 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 63 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:00:59,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 58 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:00:59,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 05:00:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-19 05:00:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 90 states have internal predecessors, (98), 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) [2023-11-19 05:00:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2023-11-19 05:00:59,626 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 29 [2023-11-19 05:00:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:00:59,626 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2023-11-19 05:00:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 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) [2023-11-19 05:00:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2023-11-19 05:00:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:00:59,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:00:59,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:00:59,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:00:59,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:00:59,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:00:59,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:00:59,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1059698757, now seen corresponding path program 1 times [2023-11-19 05:00:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:00:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708698021] [2023-11-19 05:00:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:00:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:00:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:00,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:00,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708698021] [2023-11-19 05:01:00,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708698021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:01:00,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381611128] [2023-11-19 05:01:00,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:00,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:00,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:00,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:01:00,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:01:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:00,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:00,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:00,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:01:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:00,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381611128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:01:00,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1271378331] [2023-11-19 05:01:00,323 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 05:01:00,324 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:01:00,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:01:00,335 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:01:00,336 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:01:05,165 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:01:07,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1271378331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:07,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:01:07,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4, 4] total 21 [2023-11-19 05:01:07,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20055161] [2023-11-19 05:01:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:07,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:01:07,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:07,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:01:07,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=376, Unknown=4, NotChecked=0, Total=462 [2023-11-19 05:01:07,042 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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) [2023-11-19 05:01:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:10,166 INFO L93 Difference]: Finished difference Result 212 states and 238 transitions. [2023-11-19 05:01:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:01:10,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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 30 [2023-11-19 05:01:10,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:10,168 INFO L225 Difference]: With dead ends: 212 [2023-11-19 05:01:10,168 INFO L226 Difference]: Without dead ends: 150 [2023-11-19 05:01:10,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=191, Invalid=675, Unknown=4, NotChecked=0, Total=870 [2023-11-19 05:01:10,171 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 365 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:10,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 53 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 05:01:10,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-19 05:01:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 113. [2023-11-19 05:01:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 98 states have (on average 1.2448979591836735) internal successors, (122), 112 states have internal predecessors, (122), 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) [2023-11-19 05:01:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2023-11-19 05:01:10,183 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 30 [2023-11-19 05:01:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:10,184 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2023-11-19 05:01:10,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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) [2023-11-19 05:01:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2023-11-19 05:01:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:01:10,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:10,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:10,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 05:01:10,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:01:10,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:01:10,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:10,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1852562511, now seen corresponding path program 1 times [2023-11-19 05:01:10,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:10,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703150919] [2023-11-19 05:01:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:10,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703150919] [2023-11-19 05:01:10,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703150919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:01:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529304052] [2023-11-19 05:01:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:10,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:10,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:10,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:01:10,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:01:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:10,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:10,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:10,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:10,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:01:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529304052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:01:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931276254] [2023-11-19 05:01:10,708 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 05:01:10,709 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:01:10,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:01:10,710 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:01:10,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:01:13,800 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:01:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1931276254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:14,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:01:14,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4, 4] total 21 [2023-11-19 05:01:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236486304] [2023-11-19 05:01:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:14,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:01:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:14,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:01:14,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=377, Unknown=2, NotChecked=0, Total=462 [2023-11-19 05:01:14,991 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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) [2023-11-19 05:01:19,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:19,943 INFO L93 Difference]: Finished difference Result 229 states and 255 transitions. [2023-11-19 05:01:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:01:19,944 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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 30 [2023-11-19 05:01:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:19,945 INFO L225 Difference]: With dead ends: 229 [2023-11-19 05:01:19,945 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 05:01:19,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=225, Invalid=765, Unknown=2, NotChecked=0, Total=992 [2023-11-19 05:01:19,948 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 228 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:19,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 41 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 05:01:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 05:01:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2023-11-19 05:01:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 124 states have (on average 1.2096774193548387) internal successors, (150), 138 states have internal predecessors, (150), 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) [2023-11-19 05:01:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2023-11-19 05:01:19,965 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 30 [2023-11-19 05:01:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:19,965 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2023-11-19 05:01:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 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) [2023-11-19 05:01:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2023-11-19 05:01:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:01:19,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:19,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:19,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:20,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:20,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:01:20,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:20,188 INFO L85 PathProgramCache]: Analyzing trace with hash -988928517, now seen corresponding path program 1 times [2023-11-19 05:01:20,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:20,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141790576] [2023-11-19 05:01:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:20,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141790576] [2023-11-19 05:01:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141790576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:01:20,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063115240] [2023-11-19 05:01:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:20,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:20,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:20,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:01:20,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:01:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:20,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:20,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:20,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:20,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:01:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063115240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:01:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [487829941] [2023-11-19 05:01:20,539 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 05:01:20,539 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:01:20,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:01:20,540 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:01:20,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:01:23,223 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:01:24,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [487829941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:24,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:01:24,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 22 [2023-11-19 05:01:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886641803] [2023-11-19 05:01:24,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:24,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 05:01:24,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 05:01:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=411, Unknown=2, NotChecked=0, Total=506 [2023-11-19 05:01:24,925 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 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) [2023-11-19 05:01:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:29,985 INFO L93 Difference]: Finished difference Result 253 states and 280 transitions. [2023-11-19 05:01:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 05:01:29,986 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 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 30 [2023-11-19 05:01:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:29,987 INFO L225 Difference]: With dead ends: 253 [2023-11-19 05:01:29,987 INFO L226 Difference]: Without dead ends: 198 [2023-11-19 05:01:29,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 64 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=296, Invalid=962, Unknown=2, NotChecked=0, Total=1260 [2023-11-19 05:01:29,989 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 337 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:29,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 39 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-19 05:01:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-19 05:01:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 156. [2023-11-19 05:01:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 155 states have internal predecessors, (168), 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) [2023-11-19 05:01:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2023-11-19 05:01:30,004 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 30 [2023-11-19 05:01:30,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:30,004 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2023-11-19 05:01:30,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 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) [2023-11-19 05:01:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2023-11-19 05:01:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:01:30,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:30,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:30,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 05:01:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:01:30,225 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:01:30,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1247484401, now seen corresponding path program 1 times [2023-11-19 05:01:30,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:30,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863014669] [2023-11-19 05:01:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:30,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:30,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:30,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863014669] [2023-11-19 05:01:30,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863014669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:30,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:01:30,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:01:30,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805396911] [2023-11-19 05:01:30,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:30,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:01:30,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:30,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:01:30,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:01:30,288 INFO L87 Difference]: Start difference. First operand 156 states and 168 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) [2023-11-19 05:01:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:30,322 INFO L93 Difference]: Finished difference Result 246 states and 264 transitions. [2023-11-19 05:01:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:01:30,322 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 [2023-11-19 05:01:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:30,324 INFO L225 Difference]: With dead ends: 246 [2023-11-19 05:01:30,324 INFO L226 Difference]: Without dead ends: 169 [2023-11-19 05:01:30,325 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 [2023-11-19 05:01:30,325 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 28 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:30,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 113 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:01:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-19 05:01:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 160. [2023-11-19 05:01:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 147 states have (on average 1.163265306122449) internal successors, (171), 159 states have internal predecessors, (171), 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) [2023-11-19 05:01:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2023-11-19 05:01:30,340 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 30 [2023-11-19 05:01:30,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:30,341 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2023-11-19 05:01:30,341 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) [2023-11-19 05:01:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2023-11-19 05:01:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:01:30,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:30,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:30,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 05:01:30,343 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:01:30,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:30,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1247494331, now seen corresponding path program 1 times [2023-11-19 05:01:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054679790] [2023-11-19 05:01:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:30,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:30,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054679790] [2023-11-19 05:01:30,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054679790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:01:30,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707363935] [2023-11-19 05:01:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:30,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:30,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:30,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:01:30,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:01:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:30,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:30,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:30,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:01:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:30,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707363935] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:01:30,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [54967290] [2023-11-19 05:01:30,660 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 05:01:30,660 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:01:30,661 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:01:30,661 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:01:30,661 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:01:33,018 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:01:34,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [54967290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:34,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:01:34,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 19 [2023-11-19 05:01:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013526274] [2023-11-19 05:01:34,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:34,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:01:34,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:01:34,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=307, Unknown=1, NotChecked=0, Total=380 [2023-11-19 05:01:34,920 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) [2023-11-19 05:01:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:36,708 INFO L93 Difference]: Finished difference Result 225 states and 247 transitions. [2023-11-19 05:01:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:01:36,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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 30 [2023-11-19 05:01:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:36,710 INFO L225 Difference]: With dead ends: 225 [2023-11-19 05:01:36,710 INFO L226 Difference]: Without dead ends: 154 [2023-11-19 05:01:36,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=145, Invalid=504, Unknown=1, NotChecked=0, Total=650 [2023-11-19 05:01:36,714 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 122 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:36,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 24 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:01:36,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-19 05:01:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 110. [2023-11-19 05:01:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.0833333333333333) internal successors, (117), 109 states have internal predecessors, (117), 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) [2023-11-19 05:01:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2023-11-19 05:01:36,737 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 30 [2023-11-19 05:01:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:36,738 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2023-11-19 05:01:36,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) [2023-11-19 05:01:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2023-11-19 05:01:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 05:01:36,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:36,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:36,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:36,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:36,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:01:36,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1067533277, now seen corresponding path program 1 times [2023-11-19 05:01:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:36,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192025580] [2023-11-19 05:01:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:01:37,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:37,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192025580] [2023-11-19 05:01:37,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192025580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:01:37,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102693539] [2023-11-19 05:01:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:37,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:37,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:37,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:01:37,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:01:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:37,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:01:37,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:01:37,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:01:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102693539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:01:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:01:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 05:01:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251877775] [2023-11-19 05:01:37,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:01:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:01:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:01:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:01:37,229 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2023-11-19 05:01:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:37,392 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2023-11-19 05:01:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:01:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 33 [2023-11-19 05:01:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:37,394 INFO L225 Difference]: With dead ends: 153 [2023-11-19 05:01:37,394 INFO L226 Difference]: Without dead ends: 152 [2023-11-19 05:01:37,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:01:37,395 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:37,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 57 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:01:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-19 05:01:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 109. [2023-11-19 05:01:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0740740740740742) internal successors, (116), 108 states have internal predecessors, (116), 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) [2023-11-19 05:01:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2023-11-19 05:01:37,410 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 33 [2023-11-19 05:01:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:37,411 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2023-11-19 05:01:37,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2023-11-19 05:01:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2023-11-19 05:01:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:01:37,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:37,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:37,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:37,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:37,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:01:37,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1266206947, now seen corresponding path program 1 times [2023-11-19 05:01:37,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:37,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320692048] [2023-11-19 05:01:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:37,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:01:37,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320692048] [2023-11-19 05:01:37,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320692048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:01:37,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627708905] [2023-11-19 05:01:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:37,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:37,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:37,744 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:01:37,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:01:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:37,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:01:37,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:01:37,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:01:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:01:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627708905] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:01:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1565816123] [2023-11-19 05:01:37,907 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 05:01:37,907 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:01:37,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:01:37,907 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:01:37,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:01:41,262 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:01:43,408 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4974#(and (<= (+ |ULTIMATE.start_main_~i~0#1| 1) ~CELLCOUNT~0) (<= 2147483647 |ULTIMATE.start_main_#t~post6#1|) (exists ((|v_ULTIMATE.start_main_#t~mem8#1_22| Int) (|v_ULTIMATE.start_main_#t~mem8#1_41| Int) (|v_ULTIMATE.start_main_#t~short9#1_27| Bool)) (and (or (and |v_ULTIMATE.start_main_#t~short9#1_27| (<= |ULTIMATE.start_main_~MINVAL~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#volArray~0#1.base|) (+ |ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (and (not |v_ULTIMATE.start_main_#t~short9#1_27|) (<= (+ (select (select |#memory_int| |ULTIMATE.start_main_~#volArray~0#1.base|) (+ |ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) 1) |ULTIMATE.start_main_~MINVAL~0#1|))) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~#volArray~0#1.base|) (+ |ULTIMATE.start_main_~#volArray~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) 0) (= |v_ULTIMATE.start_main_#t~mem8#1_22| 0) (not |v_ULTIMATE.start_main_#t~short9#1_27|)) (and (= |v_ULTIMATE.start_main_#t~mem8#1_41| |v_ULTIMATE.start_main_#t~mem8#1_22|) |v_ULTIMATE.start_main_#t~short9#1_27|)))) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-19 05:01:43,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:01:43,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:01:43,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 05:01:43,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030344972] [2023-11-19 05:01:43,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:01:43,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:01:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:01:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:01:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=628, Unknown=4, NotChecked=0, Total=756 [2023-11-19 05:01:43,411 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 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) [2023-11-19 05:01:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:01:43,657 INFO L93 Difference]: Finished difference Result 162 states and 171 transitions. [2023-11-19 05:01:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:01:43,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 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 34 [2023-11-19 05:01:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:01:43,660 INFO L225 Difference]: With dead ends: 162 [2023-11-19 05:01:43,660 INFO L226 Difference]: Without dead ends: 161 [2023-11-19 05:01:43,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 70 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=161, Invalid=827, Unknown=4, NotChecked=0, Total=992 [2023-11-19 05:01:43,662 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 179 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:01:43,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 60 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:01:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-19 05:01:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 118. [2023-11-19 05:01:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0683760683760684) internal successors, (125), 117 states have internal predecessors, (125), 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) [2023-11-19 05:01:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2023-11-19 05:01:43,687 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 34 [2023-11-19 05:01:43,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:01:43,688 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2023-11-19 05:01:43,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 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) [2023-11-19 05:01:43,688 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2023-11-19 05:01:43,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 05:01:43,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:43,690 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:43,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:01:43,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:43,909 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 05:01:43,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 215424608, now seen corresponding path program 2 times [2023-11-19 05:01:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:43,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222458123] [2023-11-19 05:01:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:01:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:01:44,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:01:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222458123] [2023-11-19 05:01:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222458123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:01:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707808737] [2023-11-19 05:01:44,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:01:44,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:01:44,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:44,707 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:01:44,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb651929-d86d-4d34-9f4e-2bf241230693/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:01:44,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 05:01:44,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:01:44,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:01:44,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:01:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 05:01:44,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:01:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 05:01:44,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707808737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:01:44,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26675214] [2023-11-19 05:01:44,950 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 05:01:44,950 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:01:44,951 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:01:44,951 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:01:44,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs