./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c4c876bf3d38b01f54a088b76131bc8275dc44ae3ac622f7c3187fe3c7bf156 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:38:18,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:38:18,856 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-02 12:38:18,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:38:18,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:38:18,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:38:18,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:38:18,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:38:18,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:38:18,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:38:18,908 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:38:18,909 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:38:18,910 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:38:18,910 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:38:18,912 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:38:18,913 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:38:18,913 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:38:18,914 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:38:18,914 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:38:18,914 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:38:18,915 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:38:18,915 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:38:18,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:38:18,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:38:18,917 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:38:18,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:38:18,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:38:18,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:38:18,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:38:18,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:38:18,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:38:18,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:38:18,920 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 12:38:18,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:38:18,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:38:18,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:38:18,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:38:18,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:38:18,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:38:18,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:38:18,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:18,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:38:18,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:38:18,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:38:18,925 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:38:18,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:38:18,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:38:18,925 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:38:18,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:38:18,927 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_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c4c876bf3d38b01f54a088b76131bc8275dc44ae3ac622f7c3187fe3c7bf156 [2024-11-02 12:38:19,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:38:19,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:38:19,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:38:19,258 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:38:19,259 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:38:19,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c Unable to find full path for "g++" [2024-11-02 12:38:21,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:38:21,419 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:38:21,420 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c [2024-11-02 12:38:21,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/data/2568f07fb/705155efd47541b4ad9a8b4eeff6a021/FLAG054ab6cbf [2024-11-02 12:38:21,796 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/data/2568f07fb/705155efd47541b4ad9a8b4eeff6a021 [2024-11-02 12:38:21,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:38:21,800 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:38:21,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:21,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:38:21,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:38:21,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:21" (1/1) ... [2024-11-02 12:38:21,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a95edbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:21, skipping insertion in model container [2024-11-02 12:38:21,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:21" (1/1) ... [2024-11-02 12:38:21,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:38:22,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:22,068 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:38:22,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:22,109 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:38:22,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22 WrapperNode [2024-11-02 12:38:22,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:22,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:22,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:38:22,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:38:22,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,167 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2024-11-02 12:38:22,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:22,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:38:22,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:38:22,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:38:22,183 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,190 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,196 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:38:22,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:38:22,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:38:22,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:38:22,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (1/1) ... [2024-11-02 12:38:22,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:22,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:22,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:38:22,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:38:22,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:38:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:38:22,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:38:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:38:22,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:38:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:38:22,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:38:22,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:38:22,352 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:38:22,354 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:38:22,845 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-11-02 12:38:22,845 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:38:22,893 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:38:22,893 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:38:22,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:22 BoogieIcfgContainer [2024-11-02 12:38:22,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:38:22,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:38:22,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:38:22,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:38:22,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:38:21" (1/3) ... [2024-11-02 12:38:22,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f822181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:22, skipping insertion in model container [2024-11-02 12:38:22,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:22" (2/3) ... [2024-11-02 12:38:22,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f822181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:22, skipping insertion in model container [2024-11-02 12:38:22,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:22" (3/3) ... [2024-11-02 12:38:22,906 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound10.c [2024-11-02 12:38:22,922 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:38:22,922 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-11-02 12:38:22,978 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:38:22,983 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7982ecfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:38:22,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-11-02 12:38:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 64 states have (on average 1.921875) internal successors, (123), 120 states have internal predecessors, (123), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:38:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:38:22,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:22,994 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:22,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:22,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:23,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1411953526, now seen corresponding path program 1 times [2024-11-02 12:38:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:23,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631501133] [2024-11-02 12:38:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:38:23,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:23,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631501133] [2024-11-02 12:38:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631501133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:23,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007355689] [2024-11-02 12:38:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:23,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:23,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:23,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:23,225 INFO L87 Difference]: Start difference. First operand has 129 states, 64 states have (on average 1.921875) internal successors, (123), 120 states have internal predecessors, (123), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:38:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:23,323 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2024-11-02 12:38:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:23,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 9 [2024-11-02 12:38:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:23,335 INFO L225 Difference]: With dead ends: 164 [2024-11-02 12:38:23,335 INFO L226 Difference]: Without dead ends: 116 [2024-11-02 12:38:23,338 INFO L431 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 [2024-11-02 12:38:23,344 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 13 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:23,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 192 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:23,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-02 12:38:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-02 12:38:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 63 states have (on average 1.746031746031746) internal successors, (110), 108 states have internal predecessors, (110), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2024-11-02 12:38:23,398 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 9 [2024-11-02 12:38:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:23,402 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 120 transitions. [2024-11-02 12:38:23,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:38:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 120 transitions. [2024-11-02 12:38:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 12:38:23,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:23,405 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:23,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:23,406 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:23,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash 820886385, now seen corresponding path program 1 times [2024-11-02 12:38:23,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:23,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62299030] [2024-11-02 12:38:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:23,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:38:23,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:23,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62299030] [2024-11-02 12:38:23,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62299030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:23,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:23,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:23,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111360864] [2024-11-02 12:38:23,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:23,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:23,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:23,520 INFO L87 Difference]: Start difference. First operand 116 states and 120 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:38:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:23,602 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2024-11-02 12:38:23,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 10 [2024-11-02 12:38:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:23,604 INFO L225 Difference]: With dead ends: 116 [2024-11-02 12:38:23,604 INFO L226 Difference]: Without dead ends: 112 [2024-11-02 12:38:23,605 INFO L431 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 [2024-11-02 12:38:23,606 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 12 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:23,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 186 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-02 12:38:23,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-02 12:38:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 104 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2024-11-02 12:38:23,627 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 10 [2024-11-02 12:38:23,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:23,627 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2024-11-02 12:38:23,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:38:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2024-11-02 12:38:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-02 12:38:23,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:23,628 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:23,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:38:23,629 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:23,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1139008821, now seen corresponding path program 1 times [2024-11-02 12:38:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:23,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641636593] [2024-11-02 12:38:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:38:23,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112088381] [2024-11-02 12:38:23,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:23,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:23,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:23,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:38:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:23,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:38:23,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:38:23,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:38:23,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641636593] [2024-11-02 12:38:23,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:38:23,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112088381] [2024-11-02 12:38:23,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112088381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:23,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:23,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480770387] [2024-11-02 12:38:23,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:23,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:23,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:23,842 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand has 4 states, 2 states have (on average 5.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:38:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:23,953 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2024-11-02 12:38:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:23,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 5.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2024-11-02 12:38:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:23,955 INFO L225 Difference]: With dead ends: 112 [2024-11-02 12:38:23,955 INFO L226 Difference]: Without dead ends: 110 [2024-11-02 12:38:23,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:23,957 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:23,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 268 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-02 12:38:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-02 12:38:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 63 states have (on average 1.6507936507936507) internal successors, (104), 102 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2024-11-02 12:38:23,970 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 14 [2024-11-02 12:38:23,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:23,971 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2024-11-02 12:38:23,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 5.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:38:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2024-11-02 12:38:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 12:38:23,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:23,972 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:23,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 12:38:24,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:24,177 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:24,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1304465056, now seen corresponding path program 1 times [2024-11-02 12:38:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:24,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183088080] [2024-11-02 12:38:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:38:24,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094897608] [2024-11-02 12:38:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:24,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:24,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:24,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:24,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:38:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:24,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:38:24,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:24,369 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:38:24,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183088080] [2024-11-02 12:38:24,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:38:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094897608] [2024-11-02 12:38:24,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094897608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:24,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:24,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142292696] [2024-11-02 12:38:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:24,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:24,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:24,374 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:24,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:24,428 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2024-11-02 12:38:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2024-11-02 12:38:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:24,431 INFO L225 Difference]: With dead ends: 110 [2024-11-02 12:38:24,431 INFO L226 Difference]: Without dead ends: 108 [2024-11-02 12:38:24,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:24,433 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 80 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:24,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 100 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:38:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-02 12:38:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-02 12:38:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.619047619047619) internal successors, (102), 100 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2024-11-02 12:38:24,461 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 27 [2024-11-02 12:38:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:24,462 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2024-11-02 12:38:24,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2024-11-02 12:38:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-02 12:38:24,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:24,463 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:24,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 12:38:24,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:24,664 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:24,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1783711007, now seen corresponding path program 1 times [2024-11-02 12:38:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:24,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406706235] [2024-11-02 12:38:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:38:24,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:24,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406706235] [2024-11-02 12:38:24,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406706235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:24,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701164815] [2024-11-02 12:38:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:24,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:24,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:24,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:24,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:38:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:24,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:38:24,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:38:25,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:38:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701164815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296390392] [2024-11-02 12:38:25,417 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2024-11-02 12:38:25,417 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:25,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:25,427 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:25,427 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:26,334 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-02 12:38:26,336 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [296390392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:38:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 16 [2024-11-02 12:38:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097504162] [2024-11-02 12:38:27,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:27,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 12:38:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 12:38:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:38:27,401 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand has 11 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:38:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:27,682 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2024-11-02 12:38:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:38:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2024-11-02 12:38:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:27,685 INFO L225 Difference]: With dead ends: 108 [2024-11-02 12:38:27,685 INFO L226 Difference]: Without dead ends: 106 [2024-11-02 12:38:27,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-02 12:38:27,687 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 164 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:27,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 367 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:38:27,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-02 12:38:27,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-02 12:38:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 63 states have (on average 1.5873015873015872) internal successors, (100), 98 states have internal predecessors, (100), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2024-11-02 12:38:27,700 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 28 [2024-11-02 12:38:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:27,700 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2024-11-02 12:38:27,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:38:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2024-11-02 12:38:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-02 12:38:27,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:27,702 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:27,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 12:38:27,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:27,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:27,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash -454324253, now seen corresponding path program 1 times [2024-11-02 12:38:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:27,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045262439] [2024-11-02 12:38:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:27,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045262439] [2024-11-02 12:38:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045262439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:27,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:27,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:27,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734019047] [2024-11-02 12:38:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:27,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:27,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:27,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:27,988 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:28,048 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2024-11-02 12:38:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-11-02 12:38:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:28,049 INFO L225 Difference]: With dead ends: 109 [2024-11-02 12:38:28,049 INFO L226 Difference]: Without dead ends: 108 [2024-11-02 12:38:28,049 INFO L431 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 [2024-11-02 12:38:28,050 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 35 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:28,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 144 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:38:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-02 12:38:28,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-02 12:38:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 65 states have (on average 1.5692307692307692) internal successors, (102), 100 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2024-11-02 12:38:28,070 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 30 [2024-11-02 12:38:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:28,070 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2024-11-02 12:38:28,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2024-11-02 12:38:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-02 12:38:28,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:28,071 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:28,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:38:28,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:28,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1199149877, now seen corresponding path program 1 times [2024-11-02 12:38:28,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:28,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408842804] [2024-11-02 12:38:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:28,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:28,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408842804] [2024-11-02 12:38:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408842804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:28,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:28,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:28,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468824614] [2024-11-02 12:38:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:28,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:38:28,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:38:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:28,158 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:28,293 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2024-11-02 12:38:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:38:28,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2024-11-02 12:38:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:28,295 INFO L225 Difference]: With dead ends: 110 [2024-11-02 12:38:28,296 INFO L226 Difference]: Without dead ends: 109 [2024-11-02 12:38:28,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:38:28,298 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 45 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:28,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 190 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-02 12:38:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-02 12:38:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 101 states have internal predecessors, (103), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2024-11-02 12:38:28,315 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 31 [2024-11-02 12:38:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:28,315 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2024-11-02 12:38:28,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2024-11-02 12:38:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:38:28,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:28,318 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:28,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:38:28,318 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:28,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:28,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1481059557, now seen corresponding path program 1 times [2024-11-02 12:38:28,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:28,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936479609] [2024-11-02 12:38:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:28,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-02 12:38:28,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107924201] [2024-11-02 12:38:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:28,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:28,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:28,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:28,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:38:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:28,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:38:28,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:28,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:38:28,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:28,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936479609] [2024-11-02 12:38:28,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-02 12:38:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107924201] [2024-11-02 12:38:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107924201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:28,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:28,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58612560] [2024-11-02 12:38:28,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:28,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:28,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:28,465 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:28,564 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2024-11-02 12:38:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:28,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2024-11-02 12:38:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:28,565 INFO L225 Difference]: With dead ends: 145 [2024-11-02 12:38:28,565 INFO L226 Difference]: Without dead ends: 144 [2024-11-02 12:38:28,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:28,567 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 33 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:28,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 173 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-02 12:38:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 110. [2024-11-02 12:38:28,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 102 states have internal predecessors, (104), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:38:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2024-11-02 12:38:28,577 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 32 [2024-11-02 12:38:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:28,578 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2024-11-02 12:38:28,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-02 12:38:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2024-11-02 12:38:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 12:38:28,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:28,579 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:28,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:38:28,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:28,783 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:28,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1331793907, now seen corresponding path program 1 times [2024-11-02 12:38:28,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:28,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590706775] [2024-11-02 12:38:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-02 12:38:29,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:29,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590706775] [2024-11-02 12:38:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590706775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254742618] [2024-11-02 12:38:29,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:29,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:29,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:29,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:29,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:38:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:29,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:38:29,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-02 12:38:29,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254742618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:29,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014668688] [2024-11-02 12:38:29,636 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-02 12:38:29,637 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:29,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:29,638 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:29,638 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:30,197 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-02 12:38:30,199 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:31,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1014668688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:31,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-02 12:38:31,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6, 6] total 20 [2024-11-02 12:38:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675780067] [2024-11-02 12:38:31,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:31,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-02 12:38:31,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:31,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-02 12:38:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2024-11-02 12:38:31,793 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand has 12 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:38:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:32,519 INFO L93 Difference]: Finished difference Result 149 states and 156 transitions. [2024-11-02 12:38:32,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:38:32,520 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 33 [2024-11-02 12:38:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:32,521 INFO L225 Difference]: With dead ends: 149 [2024-11-02 12:38:32,521 INFO L226 Difference]: Without dead ends: 132 [2024-11-02 12:38:32,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2024-11-02 12:38:32,522 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 126 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:32,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 209 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:38:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-02 12:38:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-02 12:38:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 123 states have internal predecessors, (127), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:38:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2024-11-02 12:38:32,533 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 33 [2024-11-02 12:38:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:32,534 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2024-11-02 12:38:32,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:38:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2024-11-02 12:38:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-02 12:38:32,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:32,535 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:32,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:38:32,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:32,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:32,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:32,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1047314131, now seen corresponding path program 1 times [2024-11-02 12:38:32,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:32,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21374191] [2024-11-02 12:38:32,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:32,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:32,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21374191] [2024-11-02 12:38:32,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21374191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:32,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:32,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939538689] [2024-11-02 12:38:32,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:32,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:32,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:32,792 INFO L87 Difference]: Start difference. First operand 132 states and 139 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:38:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:33,227 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2024-11-02 12:38:33,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2024-11-02 12:38:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:33,229 INFO L225 Difference]: With dead ends: 144 [2024-11-02 12:38:33,229 INFO L226 Difference]: Without dead ends: 134 [2024-11-02 12:38:33,229 INFO L431 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 [2024-11-02 12:38:33,230 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 42 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:33,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 106 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:38:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-02 12:38:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2024-11-02 12:38:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 95 states have (on average 1.3578947368421053) internal successors, (129), 121 states have internal predecessors, (129), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:38:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2024-11-02 12:38:33,241 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 55 [2024-11-02 12:38:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:33,241 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2024-11-02 12:38:33,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:38:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2024-11-02 12:38:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-02 12:38:33,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:33,243 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:33,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:38:33,243 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:33,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:33,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1046205905, now seen corresponding path program 1 times [2024-11-02 12:38:33,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:33,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806376089] [2024-11-02 12:38:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:33,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806376089] [2024-11-02 12:38:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806376089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:33,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:38:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468056836] [2024-11-02 12:38:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:33,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:38:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:33,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:38:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:38:33,316 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:38:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:33,455 INFO L93 Difference]: Finished difference Result 197 states and 216 transitions. [2024-11-02 12:38:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:38:33,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2024-11-02 12:38:33,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:33,456 INFO L225 Difference]: With dead ends: 197 [2024-11-02 12:38:33,456 INFO L226 Difference]: Without dead ends: 183 [2024-11-02 12:38:33,457 INFO L431 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 [2024-11-02 12:38:33,457 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 29 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:33,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 123 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:33,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-02 12:38:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 175. [2024-11-02 12:38:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 165 states have internal predecessors, (187), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-02 12:38:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2024-11-02 12:38:33,469 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 55 [2024-11-02 12:38:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:33,470 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2024-11-02 12:38:33,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:38:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2024-11-02 12:38:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-02 12:38:33,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:33,472 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:33,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-02 12:38:33,472 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:33,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:33,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1638612092, now seen corresponding path program 1 times [2024-11-02 12:38:33,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:33,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060270274] [2024-11-02 12:38:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:33,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:33,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060270274] [2024-11-02 12:38:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060270274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:33,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:33,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:38:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11906108] [2024-11-02 12:38:33,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:33,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:33,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:33,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:33,562 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:38:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:33,716 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2024-11-02 12:38:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2024-11-02 12:38:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:33,717 INFO L225 Difference]: With dead ends: 176 [2024-11-02 12:38:33,717 INFO L226 Difference]: Without dead ends: 175 [2024-11-02 12:38:33,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:38:33,718 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 36 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:33,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 197 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:38:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-02 12:38:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-02 12:38:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.330935251798561) internal successors, (185), 165 states have internal predecessors, (185), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-02 12:38:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-02 12:38:33,730 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 58 [2024-11-02 12:38:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:33,730 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-02 12:38:33,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-02 12:38:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-02 12:38:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-02 12:38:33,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:33,731 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:38:33,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:38:33,732 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 53 more)] === [2024-11-02 12:38:33,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1057675634, now seen corresponding path program 1 times [2024-11-02 12:38:33,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:33,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973174838] [2024-11-02 12:38:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:33,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:33,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:33,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973174838] [2024-11-02 12:38:33,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973174838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:38:33,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463701680] [2024-11-02 12:38:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:33,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:38:33,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:33,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:38:33,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a59c3b23-a202-44e5-8010-056075356ccc/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:38:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:33,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:38:33,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:38:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:34,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:38:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-02 12:38:34,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463701680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:38:34,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [616717397] [2024-11-02 12:38:34,278 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2024-11-02 12:38:34,278 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:38:34,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:38:34,280 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:38:34,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:38:38,541 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 57 for LOIs [2024-11-02 12:38:38,556 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-02 12:38:38,558 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:38:51,420 WARN L286 SmtUtils]: Spent 9.77s on a formula simplification. DAG size of input: 127 DAG size of output: 87 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)