./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91 --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 f5dead2b097a3e2aa15cd919ca1c3a66944ae841df5c6a1b5b64a326ca5f0b4a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:54:59,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:54:59,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:54:59,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:54:59,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:54:59,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:54:59,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:54:59,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:54:59,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:54:59,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:54:59,901 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:54:59,902 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:54:59,903 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:54:59,905 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:54:59,905 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:54:59,905 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:54:59,906 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:54:59,906 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:54:59,907 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:54:59,907 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:54:59,909 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:54:59,910 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:54:59,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:54:59,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:54:59,912 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:54:59,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:54:59,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:54:59,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:54:59,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:54:59,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:54:59,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:54:59,916 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:54:59,916 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:54:59,916 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:54:59,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:54:59,917 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:54:59,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:54:59,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:54:59,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:54:59,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:54:59,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:54:59,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:54:59,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:54:59,919 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:54:59,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:54:59,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:54:59,920 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:54:59,921 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:54:59,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:54:59,921 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_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5dead2b097a3e2aa15cd919ca1c3a66944ae841df5c6a1b5b64a326ca5f0b4a [2023-11-24 23:55:00,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:55:00,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:55:00,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:55:00,337 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:55:00,338 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:55:00,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2023-11-24 23:55:03,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:55:03,734 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:55:03,734 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound1.c [2023-11-24 23:55:03,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/data/9a766e8d8/ddc4b6259299427e9385f748db17682a/FLAGd22bf3710 [2023-11-24 23:55:03,761 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/data/9a766e8d8/ddc4b6259299427e9385f748db17682a [2023-11-24 23:55:03,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:55:03,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:55:03,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:03,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:55:03,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:55:03,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:03" (1/1) ... [2023-11-24 23:55:03,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1a0da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:03, skipping insertion in model container [2023-11-24 23:55:03,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:55:03" (1/1) ... [2023-11-24 23:55:03,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:55:04,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:04,034 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:55:04,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:55:04,071 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:55:04,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04 WrapperNode [2023-11-24 23:55:04,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:55:04,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:04,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:55:04,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:55:04,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,129 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 121 [2023-11-24 23:55:04,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:55:04,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:55:04,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:55:04,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:55:04,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:55:04,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:55:04,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:55:04,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:55:04,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (1/1) ... [2023-11-24 23:55:04,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:55:04,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:04,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:55:04,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:55:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:55:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:55:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:55:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:55:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:55:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:55:04,310 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:55:04,312 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:55:04,820 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:55:04,869 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:55:04,869 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:55:04,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:04 BoogieIcfgContainer [2023-11-24 23:55:04,871 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:55:04,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:55:04,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:55:04,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:55:04,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:55:03" (1/3) ... [2023-11-24 23:55:04,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68126d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:04, skipping insertion in model container [2023-11-24 23:55:04,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:55:04" (2/3) ... [2023-11-24 23:55:04,879 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68126d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:55:04, skipping insertion in model container [2023-11-24 23:55:04,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:55:04" (3/3) ... [2023-11-24 23:55:04,881 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound1.c [2023-11-24 23:55:04,915 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:55:04,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2023-11-24 23:55:04,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:55:04,998 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7200f5ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:55:04,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-24 23:55:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 128 states have internal predecessors, (132), 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) [2023-11-24 23:55:05,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:55:05,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:05,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:55:05,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:05,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:05,019 INFO L85 PathProgramCache]: Analyzing trace with hash 6296, now seen corresponding path program 1 times [2023-11-24 23:55:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:05,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746803305] [2023-11-24 23:55:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:05,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746803305] [2023-11-24 23:55:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746803305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:05,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:05,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:55:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303383268] [2023-11-24 23:55:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:05,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:05,241 INFO L87 Difference]: Start difference. First operand has 132 states, 68 states have (on average 1.9411764705882353) internal successors, (132), 128 states have internal predecessors, (132), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:05,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:05,467 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2023-11-24 23:55:05,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:05,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-24 23:55:05,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:05,481 INFO L225 Difference]: With dead ends: 180 [2023-11-24 23:55:05,481 INFO L226 Difference]: Without dead ends: 125 [2023-11-24 23:55:05,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:05,490 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:05,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 70 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-24 23:55:05,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-11-24 23:55:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.8656716417910448) internal successors, (125), 122 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-11-24 23:55:05,564 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 2 [2023-11-24 23:55:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:05,565 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-11-24 23:55:05,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-11-24 23:55:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:55:05,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:05,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:55:05,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:55:05,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:05,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash 195212, now seen corresponding path program 1 times [2023-11-24 23:55:05,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:05,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352089679] [2023-11-24 23:55:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:05,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:05,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352089679] [2023-11-24 23:55:05,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352089679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:05,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:55:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728562396] [2023-11-24 23:55:05,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:05,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:05,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:05,656 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:05,785 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2023-11-24 23:55:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-24 23:55:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:05,790 INFO L225 Difference]: With dead ends: 125 [2023-11-24 23:55:05,790 INFO L226 Difference]: Without dead ends: 121 [2023-11-24 23:55:05,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:05,797 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 118 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:05,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 67 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-24 23:55:05,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-24 23:55:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 67 states have (on average 1.8059701492537314) internal successors, (121), 118 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2023-11-24 23:55:05,827 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 3 [2023-11-24 23:55:05,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:05,828 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2023-11-24 23:55:05,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2023-11-24 23:55:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:55:05,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:05,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:55:05,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:55:05,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:05,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash 6051610, now seen corresponding path program 1 times [2023-11-24 23:55:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:05,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768555221] [2023-11-24 23:55:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:05,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768555221] [2023-11-24 23:55:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768555221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:55:05,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690580726] [2023-11-24 23:55:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:05,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:05,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:05,942 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:06,066 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-11-24 23:55:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:06,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-24 23:55:06,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:06,068 INFO L225 Difference]: With dead ends: 121 [2023-11-24 23:55:06,068 INFO L226 Difference]: Without dead ends: 120 [2023-11-24 23:55:06,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:06,072 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 116 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:06,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 53 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-24 23:55:06,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-24 23:55:06,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.791044776119403) internal successors, (120), 117 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2023-11-24 23:55:06,090 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 4 [2023-11-24 23:55:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:06,090 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2023-11-24 23:55:06,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2023-11-24 23:55:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:55:06,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:06,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:55:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:55:06,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:06,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:06,095 INFO L85 PathProgramCache]: Analyzing trace with hash 187599950, now seen corresponding path program 1 times [2023-11-24 23:55:06,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:06,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495953337] [2023-11-24 23:55:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:06,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:06,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495953337] [2023-11-24 23:55:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495953337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:06,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:06,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:55:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593145596] [2023-11-24 23:55:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:06,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:06,147 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:06,252 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2023-11-24 23:55:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:55:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:06,254 INFO L225 Difference]: With dead ends: 120 [2023-11-24 23:55:06,254 INFO L226 Difference]: Without dead ends: 119 [2023-11-24 23:55:06,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:06,256 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 114 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:06,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 53 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-24 23:55:06,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2023-11-24 23:55:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 116 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2023-11-24 23:55:06,273 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 5 [2023-11-24 23:55:06,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:06,273 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2023-11-24 23:55:06,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2023-11-24 23:55:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:55:06,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:06,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:06,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:55:06,275 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:06,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash -105073040, now seen corresponding path program 1 times [2023-11-24 23:55:06,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090535662] [2023-11-24 23:55:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:06,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:06,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:06,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090535662] [2023-11-24 23:55:06,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090535662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:06,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:06,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:06,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617579356] [2023-11-24 23:55:06,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:06,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:06,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:06,377 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:06,423 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2023-11-24 23:55:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:55:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:06,425 INFO L225 Difference]: With dead ends: 167 [2023-11-24 23:55:06,426 INFO L226 Difference]: Without dead ends: 123 [2023-11-24 23:55:06,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:06,428 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 4 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:06,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 339 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-24 23:55:06,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-24 23:55:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.732394366197183) internal successors, (123), 120 states have internal predecessors, (123), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2023-11-24 23:55:06,447 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 7 [2023-11-24 23:55:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:06,448 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2023-11-24 23:55:06,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,448 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2023-11-24 23:55:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:55:06,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:06,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:06,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 23:55:06,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:06,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:06,450 INFO L85 PathProgramCache]: Analyzing trace with hash 800272963, now seen corresponding path program 1 times [2023-11-24 23:55:06,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:06,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164264734] [2023-11-24 23:55:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:06,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:06,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748574957] [2023-11-24 23:55:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:06,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:06,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:06,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:55:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:06,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:06,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:06,606 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:06,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:06,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164264734] [2023-11-24 23:55:06,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748574957] [2023-11-24 23:55:06,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748574957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:06,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:06,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:06,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108452753] [2023-11-24 23:55:06,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:06,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:06,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:06,610 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:06,669 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2023-11-24 23:55:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:06,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 23:55:06,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:06,672 INFO L225 Difference]: With dead ends: 229 [2023-11-24 23:55:06,673 INFO L226 Difference]: Without dead ends: 223 [2023-11-24 23:55:06,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:06,681 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 99 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:06,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 212 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-24 23:55:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 147. [2023-11-24 23:55:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 143 states have internal predecessors, (161), 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) [2023-11-24 23:55:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2023-11-24 23:55:06,704 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 10 [2023-11-24 23:55:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:06,704 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2023-11-24 23:55:06,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2023-11-24 23:55:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:55:06,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:06,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:06,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:06,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:06,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:06,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash 263173317, now seen corresponding path program 1 times [2023-11-24 23:55:06,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:06,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121524642] [2023-11-24 23:55:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:06,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:06,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563215884] [2023-11-24 23:55:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:06,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:06,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:06,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:06,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:55:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:06,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:06,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:07,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:07,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:07,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121524642] [2023-11-24 23:55:07,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563215884] [2023-11-24 23:55:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563215884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:07,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:07,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:55:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909013961] [2023-11-24 23:55:07,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:07,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:55:07,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:07,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:55:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:07,008 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:07,119 INFO L93 Difference]: Finished difference Result 259 states and 280 transitions. [2023-11-24 23:55:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:55:07,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:55:07,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:07,121 INFO L225 Difference]: With dead ends: 259 [2023-11-24 23:55:07,121 INFO L226 Difference]: Without dead ends: 253 [2023-11-24 23:55:07,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:55:07,123 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 100 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:07,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 210 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-24 23:55:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 199. [2023-11-24 23:55:07,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 145 states have (on average 1.703448275862069) internal successors, (247), 194 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 253 transitions. [2023-11-24 23:55:07,147 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 253 transitions. Word has length 12 [2023-11-24 23:55:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:07,148 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 253 transitions. [2023-11-24 23:55:07,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:07,148 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 253 transitions. [2023-11-24 23:55:07,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:55:07,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:07,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:07,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:07,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:55:07,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:07,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -493510841, now seen corresponding path program 1 times [2023-11-24 23:55:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:07,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636237195] [2023-11-24 23:55:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:07,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679465078] [2023-11-24 23:55:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:07,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:07,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:07,367 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:07,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:55:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:07,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:07,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:07,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:07,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:07,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636237195] [2023-11-24 23:55:07,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679465078] [2023-11-24 23:55:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679465078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:07,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:07,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477734017] [2023-11-24 23:55:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:07,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:07,474 INFO L87 Difference]: Start difference. First operand 199 states and 253 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:07,720 INFO L93 Difference]: Finished difference Result 302 states and 354 transitions. [2023-11-24 23:55:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:07,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-24 23:55:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:07,723 INFO L225 Difference]: With dead ends: 302 [2023-11-24 23:55:07,723 INFO L226 Difference]: Without dead ends: 300 [2023-11-24 23:55:07,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:07,725 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 198 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:07,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 250 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:07,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-24 23:55:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 200. [2023-11-24 23:55:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 146 states have (on average 1.6917808219178083) internal successors, (247), 195 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 253 transitions. [2023-11-24 23:55:07,745 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 253 transitions. Word has length 14 [2023-11-24 23:55:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:07,745 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 253 transitions. [2023-11-24 23:55:07,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 253 transitions. [2023-11-24 23:55:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:55:07,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:07,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:07,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:07,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:55:07,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:07,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1881033179, now seen corresponding path program 1 times [2023-11-24 23:55:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:07,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939058395] [2023-11-24 23:55:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:07,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:07,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:07,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657353256] [2023-11-24 23:55:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:07,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:07,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:07,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:07,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:55:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:08,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:08,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:08,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:08,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939058395] [2023-11-24 23:55:08,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657353256] [2023-11-24 23:55:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657353256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:08,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:08,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759486354] [2023-11-24 23:55:08,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:08,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:08,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:08,058 INFO L87 Difference]: Start difference. First operand 200 states and 253 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:08,299 INFO L93 Difference]: Finished difference Result 300 states and 352 transitions. [2023-11-24 23:55:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:08,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-24 23:55:08,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:08,302 INFO L225 Difference]: With dead ends: 300 [2023-11-24 23:55:08,302 INFO L226 Difference]: Without dead ends: 298 [2023-11-24 23:55:08,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:08,304 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 193 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:08,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 252 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-24 23:55:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 201. [2023-11-24 23:55:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6802721088435375) internal successors, (247), 196 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 253 transitions. [2023-11-24 23:55:08,326 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 253 transitions. Word has length 15 [2023-11-24 23:55:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:08,327 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 253 transitions. [2023-11-24 23:55:08,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:08,327 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 253 transitions. [2023-11-24 23:55:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:55:08,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:08,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:08,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:08,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:08,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:08,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1817513527, now seen corresponding path program 1 times [2023-11-24 23:55:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946681390] [2023-11-24 23:55:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:08,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:08,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169178816] [2023-11-24 23:55:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:08,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:08,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:08,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:55:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:08,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:08,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:08,659 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:08,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946681390] [2023-11-24 23:55:08,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:08,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169178816] [2023-11-24 23:55:08,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169178816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:08,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:08,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:08,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70398584] [2023-11-24 23:55:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:08,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:08,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:08,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:08,662 INFO L87 Difference]: Start difference. First operand 201 states and 253 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:08,855 INFO L93 Difference]: Finished difference Result 278 states and 296 transitions. [2023-11-24 23:55:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-24 23:55:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:08,860 INFO L225 Difference]: With dead ends: 278 [2023-11-24 23:55:08,861 INFO L226 Difference]: Without dead ends: 276 [2023-11-24 23:55:08,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:08,864 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 220 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:08,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 251 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-24 23:55:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 201. [2023-11-24 23:55:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6598639455782314) internal successors, (244), 196 states have internal predecessors, (244), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 250 transitions. [2023-11-24 23:55:08,881 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 250 transitions. Word has length 16 [2023-11-24 23:55:08,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:08,882 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 250 transitions. [2023-11-24 23:55:08,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 250 transitions. [2023-11-24 23:55:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:55:08,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:08,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:08,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:09,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:55:09,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:09,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash -508344419, now seen corresponding path program 1 times [2023-11-24 23:55:09,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:09,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805902502] [2023-11-24 23:55:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:09,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:09,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:09,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032573811] [2023-11-24 23:55:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:09,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:09,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:09,107 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:09,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:55:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:09,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:09,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:09,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:09,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805902502] [2023-11-24 23:55:09,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:09,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032573811] [2023-11-24 23:55:09,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032573811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796685084] [2023-11-24 23:55:09,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:09,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:09,225 INFO L87 Difference]: Start difference. First operand 201 states and 250 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:09,398 INFO L93 Difference]: Finished difference Result 276 states and 293 transitions. [2023-11-24 23:55:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:09,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 23:55:09,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:09,401 INFO L225 Difference]: With dead ends: 276 [2023-11-24 23:55:09,401 INFO L226 Difference]: Without dead ends: 274 [2023-11-24 23:55:09,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:09,402 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 215 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:09,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 253 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-24 23:55:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 201. [2023-11-24 23:55:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 147 states have (on average 1.6394557823129252) internal successors, (241), 196 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 247 transitions. [2023-11-24 23:55:09,414 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 247 transitions. Word has length 17 [2023-11-24 23:55:09,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:09,414 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 247 transitions. [2023-11-24 23:55:09,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 247 transitions. [2023-11-24 23:55:09,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:55:09,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:09,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:09,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:09,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:09,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:09,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1421192267, now seen corresponding path program 1 times [2023-11-24 23:55:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:09,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747297937] [2023-11-24 23:55:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:09,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:09,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:09,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197711540] [2023-11-24 23:55:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:09,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:09,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:09,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:55:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:09,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:55:09,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:09,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:09,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747297937] [2023-11-24 23:55:09,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:09,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197711540] [2023-11-24 23:55:09,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197711540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:09,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41187547] [2023-11-24 23:55:09,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:09,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:09,740 INFO L87 Difference]: Start difference. First operand 201 states and 247 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:09,921 INFO L93 Difference]: Finished difference Result 294 states and 342 transitions. [2023-11-24 23:55:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:55:09,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-24 23:55:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:09,924 INFO L225 Difference]: With dead ends: 294 [2023-11-24 23:55:09,924 INFO L226 Difference]: Without dead ends: 292 [2023-11-24 23:55:09,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:55:09,926 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 267 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:09,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 256 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-24 23:55:09,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 204. [2023-11-24 23:55:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 150 states have (on average 1.62) internal successors, (243), 199 states have internal predecessors, (243), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 249 transitions. [2023-11-24 23:55:09,939 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 249 transitions. Word has length 18 [2023-11-24 23:55:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:09,939 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 249 transitions. [2023-11-24 23:55:09,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 249 transitions. [2023-11-24 23:55:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:55:09,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:09,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:09,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:10,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:10,146 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:10,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1107287391, now seen corresponding path program 1 times [2023-11-24 23:55:10,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:10,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159675814] [2023-11-24 23:55:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:10,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971907162] [2023-11-24 23:55:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:10,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:10,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:10,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:10,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:55:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:10,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:55:10,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:10,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:10,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:10,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159675814] [2023-11-24 23:55:10,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:10,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971907162] [2023-11-24 23:55:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971907162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:10,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:10,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:10,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579281556] [2023-11-24 23:55:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:10,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:10,277 INFO L87 Difference]: Start difference. First operand 204 states and 249 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:10,505 INFO L93 Difference]: Finished difference Result 277 states and 292 transitions. [2023-11-24 23:55:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:55:10,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-24 23:55:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:10,508 INFO L225 Difference]: With dead ends: 277 [2023-11-24 23:55:10,508 INFO L226 Difference]: Without dead ends: 275 [2023-11-24 23:55:10,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:55:10,509 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 312 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:10,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 257 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-24 23:55:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 204. [2023-11-24 23:55:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 150 states have (on average 1.6) internal successors, (240), 199 states have internal predecessors, (240), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 246 transitions. [2023-11-24 23:55:10,521 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 246 transitions. Word has length 19 [2023-11-24 23:55:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:10,521 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 246 transitions. [2023-11-24 23:55:10,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:10,522 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 246 transitions. [2023-11-24 23:55:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:55:10,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:10,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:10,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:10,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:10,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:10,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash -33829171, now seen corresponding path program 1 times [2023-11-24 23:55:10,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:10,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317948808] [2023-11-24 23:55:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:10,738 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:10,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508382497] [2023-11-24 23:55:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:10,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:10,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:10,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:10,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:55:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:10,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:55:10,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:10,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:10,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317948808] [2023-11-24 23:55:10,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508382497] [2023-11-24 23:55:10,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508382497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:10,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:10,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161799699] [2023-11-24 23:55:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:10,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:55:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:10,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:55:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:55:10,976 INFO L87 Difference]: Start difference. First operand 204 states and 246 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:11,361 INFO L93 Difference]: Finished difference Result 294 states and 332 transitions. [2023-11-24 23:55:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:55:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-24 23:55:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:11,364 INFO L225 Difference]: With dead ends: 294 [2023-11-24 23:55:11,364 INFO L226 Difference]: Without dead ends: 292 [2023-11-24 23:55:11,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:55:11,366 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 495 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:11,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 198 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-24 23:55:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 206. [2023-11-24 23:55:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 152 states have (on average 1.5855263157894737) internal successors, (241), 201 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 247 transitions. [2023-11-24 23:55:11,379 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 247 transitions. Word has length 20 [2023-11-24 23:55:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:11,380 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 247 transitions. [2023-11-24 23:55:11,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 247 transitions. [2023-11-24 23:55:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:55:11,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:11,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:11,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:11,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:11,587 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:11,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1048704223, now seen corresponding path program 1 times [2023-11-24 23:55:11,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:11,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450818838] [2023-11-24 23:55:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:11,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:11,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637463612] [2023-11-24 23:55:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:11,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:11,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:11,596 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:11,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:55:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:11,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:55:11,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:11,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:11,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450818838] [2023-11-24 23:55:11,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637463612] [2023-11-24 23:55:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637463612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:11,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:11,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:11,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110414078] [2023-11-24 23:55:11,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:55:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:55:11,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:55:11,800 INFO L87 Difference]: Start difference. First operand 206 states and 247 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:12,131 INFO L93 Difference]: Finished difference Result 292 states and 330 transitions. [2023-11-24 23:55:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:55:12,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-24 23:55:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:12,135 INFO L225 Difference]: With dead ends: 292 [2023-11-24 23:55:12,136 INFO L226 Difference]: Without dead ends: 290 [2023-11-24 23:55:12,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:55:12,139 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 383 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:12,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 200 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-24 23:55:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 207. [2023-11-24 23:55:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.5751633986928104) internal successors, (241), 202 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2023-11-24 23:55:12,152 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 21 [2023-11-24 23:55:12,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:12,152 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2023-11-24 23:55:12,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2023-11-24 23:55:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 23:55:12,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:12,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:12,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 23:55:12,359 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:12,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -355316783, now seen corresponding path program 1 times [2023-11-24 23:55:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542775174] [2023-11-24 23:55:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:12,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:12,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349148987] [2023-11-24 23:55:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:12,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:12,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:12,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:55:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:12,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:55:12,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:12,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:12,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542775174] [2023-11-24 23:55:12,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:12,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349148987] [2023-11-24 23:55:12,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349148987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:12,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:12,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:12,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14583363] [2023-11-24 23:55:12,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:12,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:55:12,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:12,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:55:12,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:55:12,682 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:13,086 INFO L93 Difference]: Finished difference Result 288 states and 328 transitions. [2023-11-24 23:55:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:55:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-24 23:55:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:13,089 INFO L225 Difference]: With dead ends: 288 [2023-11-24 23:55:13,089 INFO L226 Difference]: Without dead ends: 284 [2023-11-24 23:55:13,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:55:13,090 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 366 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:13,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 134 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-24 23:55:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 208. [2023-11-24 23:55:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 156 states have (on average 1.544871794871795) internal successors, (241), 203 states have internal predecessors, (241), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2023-11-24 23:55:13,101 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 24 [2023-11-24 23:55:13,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:13,102 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2023-11-24 23:55:13,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:13,102 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2023-11-24 23:55:13,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:55:13,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:13,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:13,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:13,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 23:55:13,309 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:13,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1870081701, now seen corresponding path program 1 times [2023-11-24 23:55:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160177641] [2023-11-24 23:55:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:13,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:13,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:13,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031201149] [2023-11-24 23:55:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:13,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:13,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:13,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:13,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:55:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:13,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 23:55:13,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:13,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:13,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:13,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160177641] [2023-11-24 23:55:13,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:13,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031201149] [2023-11-24 23:55:13,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031201149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:13,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:13,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:13,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509970373] [2023-11-24 23:55:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:13,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:55:13,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:55:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:55:13,605 INFO L87 Difference]: Start difference. First operand 208 states and 247 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:14,052 INFO L93 Difference]: Finished difference Result 282 states and 322 transitions. [2023-11-24 23:55:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:55:14,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-24 23:55:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:14,054 INFO L225 Difference]: With dead ends: 282 [2023-11-24 23:55:14,054 INFO L226 Difference]: Without dead ends: 278 [2023-11-24 23:55:14,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:55:14,055 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 351 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:14,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 136 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:55:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-24 23:55:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 207. [2023-11-24 23:55:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 157 states have (on average 1.5222929936305734) internal successors, (239), 202 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 245 transitions. [2023-11-24 23:55:14,066 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 245 transitions. Word has length 25 [2023-11-24 23:55:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:14,066 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 245 transitions. [2023-11-24 23:55:14,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 245 transitions. [2023-11-24 23:55:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:55:14,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:14,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:14,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:14,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-24 23:55:14,273 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:14,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2137957971, now seen corresponding path program 1 times [2023-11-24 23:55:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216893611] [2023-11-24 23:55:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:14,287 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:14,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373711308] [2023-11-24 23:55:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:14,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:14,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:14,289 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:14,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:55:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:14,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:14,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:14,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:14,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:14,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216893611] [2023-11-24 23:55:14,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:14,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373711308] [2023-11-24 23:55:14,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373711308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:14,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349037277] [2023-11-24 23:55:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:14,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:14,428 INFO L87 Difference]: Start difference. First operand 207 states and 245 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:14,659 INFO L93 Difference]: Finished difference Result 234 states and 270 transitions. [2023-11-24 23:55:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:14,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-24 23:55:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:14,661 INFO L225 Difference]: With dead ends: 234 [2023-11-24 23:55:14,661 INFO L226 Difference]: Without dead ends: 232 [2023-11-24 23:55:14,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:14,662 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:14,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 143 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:14,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-24 23:55:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 208. [2023-11-24 23:55:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 158 states have (on average 1.5126582278481013) internal successors, (239), 203 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 245 transitions. [2023-11-24 23:55:14,674 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 245 transitions. Word has length 26 [2023-11-24 23:55:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:14,675 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 245 transitions. [2023-11-24 23:55:14,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 245 transitions. [2023-11-24 23:55:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 23:55:14,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:14,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:14,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-24 23:55:14,882 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:14,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1852187751, now seen corresponding path program 1 times [2023-11-24 23:55:14,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:14,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807872031] [2023-11-24 23:55:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:14,891 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:14,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136067011] [2023-11-24 23:55:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:14,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:14,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:14,893 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:14,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 23:55:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:14,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:14,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:15,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:15,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807872031] [2023-11-24 23:55:15,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136067011] [2023-11-24 23:55:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136067011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:15,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:15,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:15,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716242552] [2023-11-24 23:55:15,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:15,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:15,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:15,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:15,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:15,042 INFO L87 Difference]: Start difference. First operand 208 states and 245 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:15,262 INFO L93 Difference]: Finished difference Result 232 states and 268 transitions. [2023-11-24 23:55:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-24 23:55:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:15,264 INFO L225 Difference]: With dead ends: 232 [2023-11-24 23:55:15,264 INFO L226 Difference]: Without dead ends: 230 [2023-11-24 23:55:15,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:15,265 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 39 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:15,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 147 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-24 23:55:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 209. [2023-11-24 23:55:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 159 states have (on average 1.5031446540880504) internal successors, (239), 204 states have internal predecessors, (239), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 245 transitions. [2023-11-24 23:55:15,276 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 245 transitions. Word has length 27 [2023-11-24 23:55:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:15,279 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 245 transitions. [2023-11-24 23:55:15,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:55:15,279 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 245 transitions. [2023-11-24 23:55:15,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:55:15,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:15,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:15,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-24 23:55:15,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:15,488 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:15,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1816322767, now seen corresponding path program 1 times [2023-11-24 23:55:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:15,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825212214] [2023-11-24 23:55:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:15,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:15,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:15,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011043375] [2023-11-24 23:55:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:15,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:15,510 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:15,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-24 23:55:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:15,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:15,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:15,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:15,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825212214] [2023-11-24 23:55:15,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011043375] [2023-11-24 23:55:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011043375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:15,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095016564] [2023-11-24 23:55:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:15,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:15,737 INFO L87 Difference]: Start difference. First operand 209 states and 245 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:15,926 INFO L93 Difference]: Finished difference Result 230 states and 266 transitions. [2023-11-24 23:55:15,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:15,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-11-24 23:55:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:15,929 INFO L225 Difference]: With dead ends: 230 [2023-11-24 23:55:15,929 INFO L226 Difference]: Without dead ends: 228 [2023-11-24 23:55:15,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:15,930 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 204 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:15,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 100 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:15,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-24 23:55:15,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 218. [2023-11-24 23:55:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 168 states have (on average 1.4821428571428572) internal successors, (249), 213 states have internal predecessors, (249), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 255 transitions. [2023-11-24 23:55:15,942 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 255 transitions. Word has length 35 [2023-11-24 23:55:15,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:15,943 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 255 transitions. [2023-11-24 23:55:15,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:15,944 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 255 transitions. [2023-11-24 23:55:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 23:55:15,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:15,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:15,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:16,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,151 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:16,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash -471430822, now seen corresponding path program 1 times [2023-11-24 23:55:16,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:16,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110425442] [2023-11-24 23:55:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:16,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:16,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514656666] [2023-11-24 23:55:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:16,160 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:16,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-24 23:55:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:16,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:16,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:16,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:16,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110425442] [2023-11-24 23:55:16,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:16,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514656666] [2023-11-24 23:55:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514656666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:16,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:16,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472170157] [2023-11-24 23:55:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:16,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:16,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:16,282 INFO L87 Difference]: Start difference. First operand 218 states and 255 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:16,377 INFO L93 Difference]: Finished difference Result 218 states and 255 transitions. [2023-11-24 23:55:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:16,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-11-24 23:55:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:16,379 INFO L225 Difference]: With dead ends: 218 [2023-11-24 23:55:16,380 INFO L226 Difference]: Without dead ends: 217 [2023-11-24 23:55:16,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:16,381 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 82 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:16,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 129 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:16,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-24 23:55:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-11-24 23:55:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 168 states have (on average 1.4702380952380953) internal successors, (247), 212 states have internal predecessors, (247), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 253 transitions. [2023-11-24 23:55:16,391 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 253 transitions. Word has length 36 [2023-11-24 23:55:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:16,392 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 253 transitions. [2023-11-24 23:55:16,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 253 transitions. [2023-11-24 23:55:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:55:16,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:16,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:16,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:16,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,598 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:16,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2073449796, now seen corresponding path program 1 times [2023-11-24 23:55:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237925052] [2023-11-24 23:55:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:16,606 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:16,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597202698] [2023-11-24 23:55:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:16,608 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-24 23:55:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:16,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:16,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:16,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:16,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237925052] [2023-11-24 23:55:16,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597202698] [2023-11-24 23:55:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597202698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:16,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80286772] [2023-11-24 23:55:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:16,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:16,714 INFO L87 Difference]: Start difference. First operand 217 states and 253 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:16,760 INFO L93 Difference]: Finished difference Result 217 states and 253 transitions. [2023-11-24 23:55:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-24 23:55:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:16,762 INFO L225 Difference]: With dead ends: 217 [2023-11-24 23:55:16,762 INFO L226 Difference]: Without dead ends: 216 [2023-11-24 23:55:16,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:16,763 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 80 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 194 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 [2023-11-24 23:55:16,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 194 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:16,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-24 23:55:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-24 23:55:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 168 states have (on average 1.4583333333333333) internal successors, (245), 211 states have internal predecessors, (245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2023-11-24 23:55:16,775 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 38 [2023-11-24 23:55:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:16,775 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2023-11-24 23:55:16,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2023-11-24 23:55:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:55:16,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:16,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:16,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:16,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,982 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:16,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:16,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1492513594, now seen corresponding path program 1 times [2023-11-24 23:55:16,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:16,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997243163] [2023-11-24 23:55:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:16,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:16,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877373119] [2023-11-24 23:55:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:16,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:16,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:16,992 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:17,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-24 23:55:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:17,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:17,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:17,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:17,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997243163] [2023-11-24 23:55:17,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:17,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877373119] [2023-11-24 23:55:17,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877373119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:17,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:17,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:17,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832235524] [2023-11-24 23:55:17,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:17,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:17,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:17,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:17,288 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:17,454 INFO L93 Difference]: Finished difference Result 225 states and 259 transitions. [2023-11-24 23:55:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-11-24 23:55:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:17,456 INFO L225 Difference]: With dead ends: 225 [2023-11-24 23:55:17,456 INFO L226 Difference]: Without dead ends: 224 [2023-11-24 23:55:17,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:17,457 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 165 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:17,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 97 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:55:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-24 23:55:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 217. [2023-11-24 23:55:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 169 states have (on average 1.455621301775148) internal successors, (246), 212 states have internal predecessors, (246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 252 transitions. [2023-11-24 23:55:17,468 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 252 transitions. Word has length 38 [2023-11-24 23:55:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:17,469 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 252 transitions. [2023-11-24 23:55:17,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:17,469 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 252 transitions. [2023-11-24 23:55:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 23:55:17,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:17,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:17,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-24 23:55:17,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:17,683 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:17,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:17,684 INFO L85 PathProgramCache]: Analyzing trace with hash 147565895, now seen corresponding path program 1 times [2023-11-24 23:55:17,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:17,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550128768] [2023-11-24 23:55:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:17,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:17,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:17,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78289377] [2023-11-24 23:55:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:17,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:17,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:17,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:17,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-24 23:55:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:17,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:17,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:17,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:17,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550128768] [2023-11-24 23:55:17,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78289377] [2023-11-24 23:55:17,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78289377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:17,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:17,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:17,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59400895] [2023-11-24 23:55:17,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:17,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:17,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:17,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:17,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:17,809 INFO L87 Difference]: Start difference. First operand 217 states and 252 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:17,876 INFO L93 Difference]: Finished difference Result 235 states and 270 transitions. [2023-11-24 23:55:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:17,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-11-24 23:55:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:17,879 INFO L225 Difference]: With dead ends: 235 [2023-11-24 23:55:17,879 INFO L226 Difference]: Without dead ends: 234 [2023-11-24 23:55:17,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:17,880 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 37 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:17,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 299 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:55:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-24 23:55:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2023-11-24 23:55:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 178 states have (on average 1.4438202247191012) internal successors, (257), 221 states have internal predecessors, (257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 263 transitions. [2023-11-24 23:55:17,892 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 263 transitions. Word has length 39 [2023-11-24 23:55:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:17,893 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 263 transitions. [2023-11-24 23:55:17,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 263 transitions. [2023-11-24 23:55:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 23:55:17,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:17,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:17,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:18,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-24 23:55:18,100 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:18,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash 976718965, now seen corresponding path program 1 times [2023-11-24 23:55:18,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:18,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269970329] [2023-11-24 23:55:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:18,108 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:18,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433410680] [2023-11-24 23:55:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:18,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:18,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:18,110 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:18,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-24 23:55:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:18,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:18,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:18,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:18,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269970329] [2023-11-24 23:55:18,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433410680] [2023-11-24 23:55:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433410680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:18,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661958782] [2023-11-24 23:55:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:18,215 INFO L87 Difference]: Start difference. First operand 226 states and 263 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:18,260 INFO L93 Difference]: Finished difference Result 226 states and 263 transitions. [2023-11-24 23:55:18,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:18,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2023-11-24 23:55:18,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:18,262 INFO L225 Difference]: With dead ends: 226 [2023-11-24 23:55:18,263 INFO L226 Difference]: Without dead ends: 224 [2023-11-24 23:55:18,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:18,264 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 77 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:18,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 190 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-24 23:55:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-11-24 23:55:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 178 states have (on average 1.4269662921348314) internal successors, (254), 219 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 260 transitions. [2023-11-24 23:55:18,278 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 260 transitions. Word has length 39 [2023-11-24 23:55:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:18,279 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 260 transitions. [2023-11-24 23:55:18,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 260 transitions. [2023-11-24 23:55:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 23:55:18,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:18,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:18,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:18,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-24 23:55:18,486 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:18,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash 213516968, now seen corresponding path program 1 times [2023-11-24 23:55:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:18,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102315820] [2023-11-24 23:55:18,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:18,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:18,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:18,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623617360] [2023-11-24 23:55:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:18,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:18,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:18,505 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:18,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-24 23:55:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:18,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:55:18,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:18,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:18,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102315820] [2023-11-24 23:55:18,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:18,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623617360] [2023-11-24 23:55:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623617360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:18,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:18,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:55:18,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142421406] [2023-11-24 23:55:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:18,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:55:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:18,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:55:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:55:18,612 INFO L87 Difference]: Start difference. First operand 224 states and 260 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:18,668 INFO L93 Difference]: Finished difference Result 265 states and 274 transitions. [2023-11-24 23:55:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:18,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-11-24 23:55:18,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:18,671 INFO L225 Difference]: With dead ends: 265 [2023-11-24 23:55:18,671 INFO L226 Difference]: Without dead ends: 264 [2023-11-24 23:55:18,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:18,672 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 63 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:18,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 299 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-24 23:55:18,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 232. [2023-11-24 23:55:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 186 states have (on average 1.413978494623656) internal successors, (263), 227 states have internal predecessors, (263), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 269 transitions. [2023-11-24 23:55:18,686 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 269 transitions. Word has length 40 [2023-11-24 23:55:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:18,687 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 269 transitions. [2023-11-24 23:55:18,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:18,687 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 269 transitions. [2023-11-24 23:55:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:55:18,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:18,688 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:18,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:18,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-24 23:55:18,894 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:18,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash 76905769, now seen corresponding path program 1 times [2023-11-24 23:55:18,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:18,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33036674] [2023-11-24 23:55:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:18,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:18,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985960836] [2023-11-24 23:55:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:18,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:18,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:18,903 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:18,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-24 23:55:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:18,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:18,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:19,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:19,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33036674] [2023-11-24 23:55:19,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985960836] [2023-11-24 23:55:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985960836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:19,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157954060] [2023-11-24 23:55:19,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:19,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:19,022 INFO L87 Difference]: Start difference. First operand 232 states and 269 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:19,066 INFO L93 Difference]: Finished difference Result 232 states and 269 transitions. [2023-11-24 23:55:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:55:19,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-11-24 23:55:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:19,069 INFO L225 Difference]: With dead ends: 232 [2023-11-24 23:55:19,069 INFO L226 Difference]: Without dead ends: 231 [2023-11-24 23:55:19,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:55:19,070 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 82 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:19,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 312 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-24 23:55:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-11-24 23:55:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 186 states have (on average 1.403225806451613) internal successors, (261), 226 states have internal predecessors, (261), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 267 transitions. [2023-11-24 23:55:19,082 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 267 transitions. Word has length 41 [2023-11-24 23:55:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:19,083 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 267 transitions. [2023-11-24 23:55:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 267 transitions. [2023-11-24 23:55:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:55:19,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:19,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:19,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-24 23:55:19,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-24 23:55:19,289 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:19,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1910888408, now seen corresponding path program 1 times [2023-11-24 23:55:19,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:19,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313186673] [2023-11-24 23:55:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:19,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095557723] [2023-11-24 23:55:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:19,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:19,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:19,300 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:19,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-24 23:55:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:19,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:55:19,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:19,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:19,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313186673] [2023-11-24 23:55:19,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095557723] [2023-11-24 23:55:19,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095557723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:19,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:19,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:55:19,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086448446] [2023-11-24 23:55:19,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:19,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:55:19,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:55:19,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:55:19,408 INFO L87 Difference]: Start difference. First operand 231 states and 267 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:19,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:19,459 INFO L93 Difference]: Finished difference Result 292 states and 338 transitions. [2023-11-24 23:55:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:55:19,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2023-11-24 23:55:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:19,461 INFO L225 Difference]: With dead ends: 292 [2023-11-24 23:55:19,462 INFO L226 Difference]: Without dead ends: 291 [2023-11-24 23:55:19,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:55:19,463 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 79 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:19,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 401 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:55:19,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-24 23:55:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 230. [2023-11-24 23:55:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 186 states have (on average 1.39247311827957) internal successors, (259), 225 states have internal predecessors, (259), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 265 transitions. [2023-11-24 23:55:19,474 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 265 transitions. Word has length 42 [2023-11-24 23:55:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:19,475 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 265 transitions. [2023-11-24 23:55:19,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 265 transitions. [2023-11-24 23:55:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-24 23:55:19,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:19,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:19,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:19,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-24 23:55:19,681 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:19,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1882244330, now seen corresponding path program 1 times [2023-11-24 23:55:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703152225] [2023-11-24 23:55:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:19,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:19,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138949048] [2023-11-24 23:55:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:19,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:19,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:19,691 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:19,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-24 23:55:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:19,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:55:19,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:19,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:19,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:19,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703152225] [2023-11-24 23:55:19,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:19,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138949048] [2023-11-24 23:55:19,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138949048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:19,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [413317042] [2023-11-24 23:55:19,939 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-11-24 23:55:19,940 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:19,943 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:19,950 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:19,950 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:21,425 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-24 23:55:21,430 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [413317042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:23,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 6] total 19 [2023-11-24 23:55:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006051629] [2023-11-24 23:55:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:23,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 23:55:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 23:55:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:55:23,930 INFO L87 Difference]: Start difference. First operand 230 states and 265 transitions. Second operand has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:25,482 INFO L93 Difference]: Finished difference Result 282 states and 300 transitions. [2023-11-24 23:55:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 23:55:25,483 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-11-24 23:55:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:25,484 INFO L225 Difference]: With dead ends: 282 [2023-11-24 23:55:25,485 INFO L226 Difference]: Without dead ends: 214 [2023-11-24 23:55:25,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-11-24 23:55:25,486 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 78 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:25,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 189 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:55:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-24 23:55:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2023-11-24 23:55:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 162 states have (on average 1.345679012345679) internal successors, (218), 201 states have internal predecessors, (218), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 224 transitions. [2023-11-24 23:55:25,499 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 224 transitions. Word has length 44 [2023-11-24 23:55:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:25,500 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 224 transitions. [2023-11-24 23:55:25,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 224 transitions. [2023-11-24 23:55:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 23:55:25,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:25,501 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:25,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-24 23:55:25,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-24 23:55:25,706 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:25,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash 655591230, now seen corresponding path program 1 times [2023-11-24 23:55:25,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:25,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968726747] [2023-11-24 23:55:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:25,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:25,716 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:25,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645258977] [2023-11-24 23:55:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:25,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:25,717 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-24 23:55:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:25,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:55:25,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:26,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:26,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968726747] [2023-11-24 23:55:26,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645258977] [2023-11-24 23:55:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645258977] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1262038445] [2023-11-24 23:55:26,233 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-24 23:55:26,234 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:26,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:26,235 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:26,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:27,503 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-24 23:55:27,508 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1262038445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:30,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:30,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5] total 23 [2023-11-24 23:55:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488401806] [2023-11-24 23:55:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:30,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 23:55:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:30,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 23:55:30,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2023-11-24 23:55:30,148 INFO L87 Difference]: Start difference. First operand 207 states and 224 transitions. Second operand has 16 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:32,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:32,003 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2023-11-24 23:55:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 23:55:32,003 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2023-11-24 23:55:32,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:32,005 INFO L225 Difference]: With dead ends: 209 [2023-11-24 23:55:32,005 INFO L226 Difference]: Without dead ends: 207 [2023-11-24 23:55:32,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2023-11-24 23:55:32,006 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 10 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:32,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 272 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:55:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-24 23:55:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-11-24 23:55:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 162 states have (on average 1.3333333333333333) internal successors, (216), 201 states have internal predecessors, (216), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2023-11-24 23:55:32,021 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 46 [2023-11-24 23:55:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:32,021 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2023-11-24 23:55:32,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2023-11-24 23:55:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 23:55:32,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:32,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:32,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-24 23:55:32,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:32,228 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:32,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1337015936, now seen corresponding path program 1 times [2023-11-24 23:55:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448731887] [2023-11-24 23:55:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:32,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:32,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415987372] [2023-11-24 23:55:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:32,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:32,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:32,240 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:32,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-24 23:55:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:32,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-24 23:55:32,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:32,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:32,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:32,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448731887] [2023-11-24 23:55:32,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415987372] [2023-11-24 23:55:32,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415987372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1695746480] [2023-11-24 23:55:32,613 INFO L159 IcfgInterpreter]: Started Sifa with 45 locations of interest [2023-11-24 23:55:32,613 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:32,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:32,614 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:32,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:33,592 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-24 23:55:33,596 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:36,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1695746480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:36,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:36,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [6, 6] total 26 [2023-11-24 23:55:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429360681] [2023-11-24 23:55:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 23:55:36,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 23:55:36,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2023-11-24 23:55:36,701 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand has 17 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:38,926 INFO L93 Difference]: Finished difference Result 220 states and 225 transitions. [2023-11-24 23:55:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-24 23:55:38,927 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2023-11-24 23:55:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:38,928 INFO L225 Difference]: With dead ends: 220 [2023-11-24 23:55:38,928 INFO L226 Difference]: Without dead ends: 187 [2023-11-24 23:55:38,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:55:38,930 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 32 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:38,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 196 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 23:55:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-24 23:55:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-11-24 23:55:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 142 states have (on average 1.3098591549295775) internal successors, (186), 181 states have internal predecessors, (186), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:55:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 192 transitions. [2023-11-24 23:55:38,942 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 192 transitions. Word has length 48 [2023-11-24 23:55:38,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:38,943 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 192 transitions. [2023-11-24 23:55:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 192 transitions. [2023-11-24 23:55:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 23:55:38,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:38,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:38,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-24 23:55:39,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-24 23:55:39,150 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:39,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1688924086, now seen corresponding path program 1 times [2023-11-24 23:55:39,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:39,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614024553] [2023-11-24 23:55:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:39,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:39,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:39,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877973008] [2023-11-24 23:55:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:39,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:39,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:39,162 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:39,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-24 23:55:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:39,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:55:39,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:39,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:55:39,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:39,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614024553] [2023-11-24 23:55:39,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:39,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877973008] [2023-11-24 23:55:39,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877973008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:39,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:55:39,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 23:55:39,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996852606] [2023-11-24 23:55:39,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:39,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 23:55:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:39,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 23:55:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:55:39,381 INFO L87 Difference]: Start difference. First operand 187 states and 192 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:39,781 INFO L93 Difference]: Finished difference Result 296 states and 304 transitions. [2023-11-24 23:55:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 23:55:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2023-11-24 23:55:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:39,783 INFO L225 Difference]: With dead ends: 296 [2023-11-24 23:55:39,783 INFO L226 Difference]: Without dead ends: 295 [2023-11-24 23:55:39,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:55:39,784 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 203 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:39,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 482 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:55:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-24 23:55:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 228. [2023-11-24 23:55:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 182 states have (on average 1.3736263736263736) internal successors, (250), 221 states have internal predecessors, (250), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:55:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 258 transitions. [2023-11-24 23:55:39,799 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 258 transitions. Word has length 48 [2023-11-24 23:55:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:39,800 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 258 transitions. [2023-11-24 23:55:39,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 258 transitions. [2023-11-24 23:55:39,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 23:55:39,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:39,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:39,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:40,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-24 23:55:40,006 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:40,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1688924104, now seen corresponding path program 1 times [2023-11-24 23:55:40,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:40,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833666145] [2023-11-24 23:55:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:40,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:40,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824998448] [2023-11-24 23:55:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:40,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:40,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:40,014 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:40,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-24 23:55:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:40,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:55:40,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:40,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:40,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833666145] [2023-11-24 23:55:40,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824998448] [2023-11-24 23:55:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824998448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965631244] [2023-11-24 23:55:40,197 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-11-24 23:55:40,198 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:40,198 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:40,198 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:40,198 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:41,017 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-24 23:55:41,021 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:43,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1965631244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:43,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 6] total 20 [2023-11-24 23:55:43,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132537007] [2023-11-24 23:55:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:43,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 23:55:43,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:43,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 23:55:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-24 23:55:43,599 INFO L87 Difference]: Start difference. First operand 228 states and 258 transitions. Second operand has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:45,724 INFO L93 Difference]: Finished difference Result 337 states and 368 transitions. [2023-11-24 23:55:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 23:55:45,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2023-11-24 23:55:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:45,726 INFO L225 Difference]: With dead ends: 337 [2023-11-24 23:55:45,726 INFO L226 Difference]: Without dead ends: 276 [2023-11-24 23:55:45,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 113 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:55:45,727 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 48 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:45,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 220 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 23:55:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-24 23:55:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 260. [2023-11-24 23:55:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 211 states have (on average 1.3317535545023698) internal successors, (281), 250 states have internal predecessors, (281), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:55:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2023-11-24 23:55:45,745 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 48 [2023-11-24 23:55:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:45,745 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2023-11-24 23:55:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2023-11-24 23:55:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-24 23:55:45,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:45,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:45,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-24 23:55:45,952 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:45,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash -817038976, now seen corresponding path program 1 times [2023-11-24 23:55:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004534437] [2023-11-24 23:55:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:45,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:45,959 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:45,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123114255] [2023-11-24 23:55:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:45,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:45,961 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:45,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-24 23:55:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:46,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:55:46,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:46,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:46,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004534437] [2023-11-24 23:55:46,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123114255] [2023-11-24 23:55:46,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123114255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:55:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1628593317] [2023-11-24 23:55:46,338 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-24 23:55:46,338 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:46,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:46,339 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:46,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:47,366 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-24 23:55:47,371 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:50,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1628593317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:50,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:55:50,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [6, 6] total 26 [2023-11-24 23:55:50,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105428608] [2023-11-24 23:55:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:50,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 23:55:50,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 23:55:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2023-11-24 23:55:50,405 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:55:52,266 INFO L93 Difference]: Finished difference Result 268 states and 299 transitions. [2023-11-24 23:55:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-24 23:55:52,266 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-11-24 23:55:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:55:52,267 INFO L225 Difference]: With dead ends: 268 [2023-11-24 23:55:52,268 INFO L226 Difference]: Without dead ends: 267 [2023-11-24 23:55:52,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2023-11-24 23:55:52,269 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 11 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:55:52,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 211 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 23:55:52,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-24 23:55:52,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 262. [2023-11-24 23:55:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 213 states have (on average 1.3286384976525822) internal successors, (283), 252 states have internal predecessors, (283), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:55:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 293 transitions. [2023-11-24 23:55:52,286 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 293 transitions. Word has length 49 [2023-11-24 23:55:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:55:52,287 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 293 transitions. [2023-11-24 23:55:52,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:55:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 293 transitions. [2023-11-24 23:55:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-24 23:55:52,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:55:52,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:55:52,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-24 23:55:52,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-24 23:55:52,494 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-24 23:55:52,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:55:52,494 INFO L85 PathProgramCache]: Analyzing trace with hash 441595660, now seen corresponding path program 1 times [2023-11-24 23:55:52,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:55:52,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531693978] [2023-11-24 23:55:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:55:52,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:55:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144986534] [2023-11-24 23:55:52,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:55:52,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:55:52,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:55:52,507 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:55:52,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45daecc4-9fd9-4f3c-9bf4-ed68ac30dfe8/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-24 23:55:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:55:52,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:55:52,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:55:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:55:52,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:55:53,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:55:53,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531693978] [2023-11-24 23:55:53,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:55:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144986534] [2023-11-24 23:55:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144986534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:55:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1462827066] [2023-11-24 23:55:53,084 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-11-24 23:55:53,084 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:55:53,086 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:55:53,086 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:55:53,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:55:54,182 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2023-11-24 23:55:54,187 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:55:58,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1462827066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:55:58,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:55:58,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 22 [2023-11-24 23:55:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813573690] [2023-11-24 23:55:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:55:58,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-24 23:55:58,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:55:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-24 23:55:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2023-11-24 23:55:58,300 INFO L87 Difference]: Start difference. First operand 262 states and 293 transitions. Second operand has 18 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)