./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:17:04,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:17:04,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:17:04,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:17:04,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:17:04,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:17:04,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:17:04,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:17:04,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:17:04,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:17:04,217 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:17:04,218 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:17:04,218 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:17:04,219 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:17:04,219 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:17:04,220 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:17:04,221 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:17:04,221 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:17:04,222 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:17:04,222 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:17:04,223 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:17:04,224 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:17:04,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:17:04,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:17:04,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:17:04,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:17:04,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:17:04,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:17:04,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:17:04,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:17:04,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:17:04,229 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:17:04,229 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:17:04,229 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:17:04,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:17:04,230 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:17:04,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:17:04,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:17:04,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:17:04,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:17:04,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:17:04,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:17:04,234 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:17:04,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:17:04,235 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:17:04,235 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:17:04,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:17:04,235 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_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 [2023-11-19 05:17:04,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:17:04,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:17:04,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:17:04,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:17:04,497 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:17:04,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2023-11-19 05:17:07,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:17:07,898 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:17:07,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2023-11-19 05:17:07,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/data/7cf2bfda4/a02772d363b54ba19ac71c4360973ae0/FLAG1098e8168 [2023-11-19 05:17:07,920 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/data/7cf2bfda4/a02772d363b54ba19ac71c4360973ae0 [2023-11-19 05:17:07,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:17:07,924 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:17:07,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:07,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:17:07,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:17:07,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:07" (1/1) ... [2023-11-19 05:17:07,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2ebe49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:07, skipping insertion in model container [2023-11-19 05:17:07,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:17:07" (1/1) ... [2023-11-19 05:17:07,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:17:08,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:08,117 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:17:08,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:17:08,154 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:17:08,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08 WrapperNode [2023-11-19 05:17:08,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:17:08,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:17:08,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:17:08,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:17:08,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,201 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 107 [2023-11-19 05:17:08,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:17:08,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:17:08,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:17:08,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:17:08,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:17:08,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:17:08,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:17:08,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:17:08,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (1/1) ... [2023-11-19 05:17:08,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:17:08,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:08,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:17:08,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:17:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:17:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:17:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:17:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:17:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:17:08,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:17:08,383 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:17:08,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:17:08,788 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:17:08,819 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:17:08,823 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:17:08,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:17:08 BoogieIcfgContainer [2023-11-19 05:17:08,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:17:08,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:17:08,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:17:08,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:17:08,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:17:07" (1/3) ... [2023-11-19 05:17:08,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed27b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:17:08, skipping insertion in model container [2023-11-19 05:17:08,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:17:08" (2/3) ... [2023-11-19 05:17:08,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed27b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:17:08, skipping insertion in model container [2023-11-19 05:17:08,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:17:08" (3/3) ... [2023-11-19 05:17:08,839 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound100.c [2023-11-19 05:17:08,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:17:08,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2023-11-19 05:17:08,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:17:08,947 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;@a6759dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:17:08,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-19 05:17:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 130 states have internal predecessors, (133), 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) [2023-11-19 05:17:08,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:17:08,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:08,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:17:08,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:08,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash 196269, now seen corresponding path program 1 times [2023-11-19 05:17:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:08,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171098334] [2023-11-19 05:17:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:08,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:09,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171098334] [2023-11-19 05:17:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171098334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:09,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:17:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420030063] [2023-11-19 05:17:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:17:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:17:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:09,299 INFO L87 Difference]: Start difference. First operand has 135 states, 68 states have (on average 1.9558823529411764) internal successors, (133), 130 states have internal predecessors, (133), 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2023-11-19 05:17:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:09,447 INFO L93 Difference]: Finished difference Result 198 states and 209 transitions. [2023-11-19 05:17:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:17:09,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 [2023-11-19 05:17:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:09,458 INFO L225 Difference]: With dead ends: 198 [2023-11-19 05:17:09,458 INFO L226 Difference]: Without dead ends: 126 [2023-11-19 05:17:09,461 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 [2023-11-19 05:17:09,465 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 4 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:09,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 361 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:17:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-19 05:17:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-11-19 05:17:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 71 states have (on average 1.7464788732394365) internal successors, (124), 122 states have internal predecessors, (124), 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) [2023-11-19 05:17:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2023-11-19 05:17:09,528 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 3 [2023-11-19 05:17:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:09,528 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2023-11-19 05:17:09,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2023-11-19 05:17:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2023-11-19 05:17:09,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:17:09,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:09,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:17:09,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:17:09,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:09,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1552123358, now seen corresponding path program 1 times [2023-11-19 05:17:09,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:09,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321254985] [2023-11-19 05:17:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:09,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:09,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:09,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321254985] [2023-11-19 05:17:09,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321254985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:09,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:09,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:17:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713160375] [2023-11-19 05:17:09,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:09,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:09,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:09,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:09,617 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:17:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:09,747 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2023-11-19 05:17:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:09,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 05:17:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:09,751 INFO L225 Difference]: With dead ends: 239 [2023-11-19 05:17:09,751 INFO L226 Difference]: Without dead ends: 228 [2023-11-19 05:17:09,752 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 [2023-11-19 05:17:09,754 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 100 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:09,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 184 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:17:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-19 05:17:09,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 178. [2023-11-19 05:17:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 121 states have (on average 1.6942148760330578) internal successors, (205), 172 states have internal predecessors, (205), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:17:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2023-11-19 05:17:09,790 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 6 [2023-11-19 05:17:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:09,790 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2023-11-19 05:17:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:17:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2023-11-19 05:17:09,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:17:09,791 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:09,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:09,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:17:09,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:09,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:09,793 INFO L85 PathProgramCache]: Analyzing trace with hash -310900842, now seen corresponding path program 1 times [2023-11-19 05:17:09,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:09,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760346095] [2023-11-19 05:17:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:09,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:09,806 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:09,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044739624] [2023-11-19 05:17:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:09,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:09,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:09,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:17:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:09,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:17:09,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:09,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:09,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:09,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760346095] [2023-11-19 05:17:09,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:09,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044739624] [2023-11-19 05:17:09,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044739624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:09,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:09,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:17:09,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270183227] [2023-11-19 05:17:09,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:09,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:09,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:09,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:09,892 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:17:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:10,201 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2023-11-19 05:17:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:10,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:17:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:10,204 INFO L225 Difference]: With dead ends: 217 [2023-11-19 05:17:10,204 INFO L226 Difference]: Without dead ends: 190 [2023-11-19 05:17:10,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:10,208 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 58 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:10,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 119 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:17:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-19 05:17:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 182. [2023-11-19 05:17:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 125 states have (on average 1.488) internal successors, (186), 176 states have internal predecessors, (186), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:17:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2023-11-19 05:17:10,240 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 9 [2023-11-19 05:17:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:10,240 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2023-11-19 05:17:10,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:17:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2023-11-19 05:17:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:17:10,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:10,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:10,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:10,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:10,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:10,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:10,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1298419482, now seen corresponding path program 1 times [2023-11-19 05:17:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:10,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179594627] [2023-11-19 05:17:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:10,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:10,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:10,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974198189] [2023-11-19 05:17:10,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:10,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:10,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:10,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:10,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:17:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:10,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:17:10,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:10,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:10,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179594627] [2023-11-19 05:17:10,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974198189] [2023-11-19 05:17:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974198189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:10,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:17:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13762238] [2023-11-19 05:17:10,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:10,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:17:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:17:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:10,570 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-11-19 05:17:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:10,774 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2023-11-19 05:17:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:17:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2023-11-19 05:17:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:10,777 INFO L225 Difference]: With dead ends: 201 [2023-11-19 05:17:10,777 INFO L226 Difference]: Without dead ends: 167 [2023-11-19 05:17:10,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:10,779 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 116 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:10,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 176 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:17:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-19 05:17:10,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 154. [2023-11-19 05:17:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 149 states have internal predecessors, (153), 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) [2023-11-19 05:17:10,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2023-11-19 05:17:10,804 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 14 [2023-11-19 05:17:10,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:10,805 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2023-11-19 05:17:10,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2023-11-19 05:17:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2023-11-19 05:17:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 05:17:10,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:10,807 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] [2023-11-19 05:17:10,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 05:17:11,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:11,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:11,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash -226960272, now seen corresponding path program 1 times [2023-11-19 05:17:11,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:11,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77120503] [2023-11-19 05:17:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:11,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:11,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707841728] [2023-11-19 05:17:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:11,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:11,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:11,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:11,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:17:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:11,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:17:11,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:11,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:11,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77120503] [2023-11-19 05:17:11,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:11,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707841728] [2023-11-19 05:17:11,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707841728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:11,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:11,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:17:11,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37629589] [2023-11-19 05:17:11,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:11,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:11,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:11,159 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-19 05:17:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:11,174 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2023-11-19 05:17:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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 32 [2023-11-19 05:17:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:11,176 INFO L225 Difference]: With dead ends: 154 [2023-11-19 05:17:11,177 INFO L226 Difference]: Without dead ends: 153 [2023-11-19 05:17:11,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:11,178 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 89 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:11,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 118 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:17:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-19 05:17:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-19 05:17:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 148 states have internal predecessors, (151), 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) [2023-11-19 05:17:11,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2023-11-19 05:17:11,191 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 32 [2023-11-19 05:17:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:11,192 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2023-11-19 05:17:11,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-19 05:17:11,193 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2023-11-19 05:17:11,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 05:17:11,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:11,194 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] [2023-11-19 05:17:11,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:11,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:11,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1554166260, now seen corresponding path program 1 times [2023-11-19 05:17:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:11,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251362638] [2023-11-19 05:17:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:11,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309362581] [2023-11-19 05:17:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:11,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:11,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:11,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:17:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:11,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:17:11,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:11,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:11,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:11,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251362638] [2023-11-19 05:17:11,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:11,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309362581] [2023-11-19 05:17:11,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309362581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:11,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:11,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:17:11,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248665056] [2023-11-19 05:17:11,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:11,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:17:11,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:11,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:17:11,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:11,541 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-19 05:17:11,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:11,569 INFO L93 Difference]: Finished difference Result 154 states and 157 transitions. [2023-11-19 05:17:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:17:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 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 33 [2023-11-19 05:17:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:11,571 INFO L225 Difference]: With dead ends: 154 [2023-11-19 05:17:11,571 INFO L226 Difference]: Without dead ends: 153 [2023-11-19 05:17:11,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:17:11,573 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:11,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:17:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-19 05:17:11,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-19 05:17:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.530612244897959) internal successors, (150), 148 states have internal predecessors, (150), 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) [2023-11-19 05:17:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2023-11-19 05:17:11,593 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 33 [2023-11-19 05:17:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:11,594 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2023-11-19 05:17:11,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-19 05:17:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2023-11-19 05:17:11,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 05:17:11,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:11,596 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] [2023-11-19 05:17:11,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:11,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:11,796 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:11,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 125864312, now seen corresponding path program 1 times [2023-11-19 05:17:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732101435] [2023-11-19 05:17:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:11,810 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:11,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190591019] [2023-11-19 05:17:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:11,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:11,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:11,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:11,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:17:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:11,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:17:11,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:12,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:12,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732101435] [2023-11-19 05:17:12,014 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190591019] [2023-11-19 05:17:12,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190591019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:12,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:12,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302773541] [2023-11-19 05:17:12,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:17:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:17:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:12,017 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2023-11-19 05:17:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:12,334 INFO L93 Difference]: Finished difference Result 271 states and 277 transitions. [2023-11-19 05:17:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:17:12,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 37 [2023-11-19 05:17:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:12,336 INFO L225 Difference]: With dead ends: 271 [2023-11-19 05:17:12,337 INFO L226 Difference]: Without dead ends: 245 [2023-11-19 05:17:12,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:12,341 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 89 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:12,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 108 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:17:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-19 05:17:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 218. [2023-11-19 05:17:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 161 states have (on average 1.4782608695652173) internal successors, (238), 211 states have internal predecessors, (238), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:17:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 248 transitions. [2023-11-19 05:17:12,366 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 248 transitions. Word has length 37 [2023-11-19 05:17:12,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:12,366 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 248 transitions. [2023-11-19 05:17:12,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2023-11-19 05:17:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 248 transitions. [2023-11-19 05:17:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 05:17:12,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:12,368 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] [2023-11-19 05:17:12,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:12,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:12,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:12,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:12,585 INFO L85 PathProgramCache]: Analyzing trace with hash 117378680, now seen corresponding path program 1 times [2023-11-19 05:17:12,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:12,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480901153] [2023-11-19 05:17:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:12,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:12,598 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:12,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530101541] [2023-11-19 05:17:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:12,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:12,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:12,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:12,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:17:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:12,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:17:12,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:12,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:12,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480901153] [2023-11-19 05:17:12,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530101541] [2023-11-19 05:17:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530101541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:12,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:12,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:12,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600172789] [2023-11-19 05:17:12,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:12,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:17:12,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:12,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:17:12,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:12,755 INFO L87 Difference]: Start difference. First operand 218 states and 248 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) [2023-11-19 05:17:12,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:12,866 INFO L93 Difference]: Finished difference Result 220 states and 248 transitions. [2023-11-19 05:17:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:17:12,867 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 [2023-11-19 05:17:12,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:12,869 INFO L225 Difference]: With dead ends: 220 [2023-11-19 05:17:12,869 INFO L226 Difference]: Without dead ends: 219 [2023-11-19 05:17:12,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:12,872 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 36 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:12,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 176 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:17:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-19 05:17:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2023-11-19 05:17:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 161 states have (on average 1.4720496894409938) internal successors, (237), 211 states have internal predecessors, (237), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:17:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 247 transitions. [2023-11-19 05:17:12,886 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 247 transitions. Word has length 40 [2023-11-19 05:17:12,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:12,886 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 247 transitions. [2023-11-19 05:17:12,886 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) [2023-11-19 05:17:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 247 transitions. [2023-11-19 05:17:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:17:12,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:12,890 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, 1] [2023-11-19 05:17:12,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:13,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:13,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:13,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -656228100, now seen corresponding path program 1 times [2023-11-19 05:17:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:13,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385290003] [2023-11-19 05:17:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:13,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:13,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:13,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732057499] [2023-11-19 05:17:13,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:13,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:13,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:13,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:13,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:17:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:13,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:17:13,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:13,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:13,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:13,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385290003] [2023-11-19 05:17:13,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:13,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732057499] [2023-11-19 05:17:13,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732057499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:13,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:17:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379923854] [2023-11-19 05:17:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:13,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:17:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:17:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:13,246 INFO L87 Difference]: Start difference. First operand 218 states and 247 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 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) [2023-11-19 05:17:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:13,336 INFO L93 Difference]: Finished difference Result 219 states and 247 transitions. [2023-11-19 05:17:13,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:17:13,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 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 [2023-11-19 05:17:13,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:13,339 INFO L225 Difference]: With dead ends: 219 [2023-11-19 05:17:13,339 INFO L226 Difference]: Without dead ends: 218 [2023-11-19 05:17:13,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:17:13,340 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 30 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:13,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 181 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:17:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-19 05:17:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2023-11-19 05:17:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 161 states have (on average 1.4658385093167703) internal successors, (236), 211 states have internal predecessors, (236), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:17:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 246 transitions. [2023-11-19 05:17:13,351 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 246 transitions. Word has length 41 [2023-11-19 05:17:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:13,352 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 246 transitions. [2023-11-19 05:17:13,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 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) [2023-11-19 05:17:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 246 transitions. [2023-11-19 05:17:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 05:17:13,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:13,353 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, 1, 1] [2023-11-19 05:17:13,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 05:17:13,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:13,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:13,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash 724989598, now seen corresponding path program 1 times [2023-11-19 05:17:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:13,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569247435] [2023-11-19 05:17:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:13,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:13,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:13,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994117891] [2023-11-19 05:17:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:13,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:13,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:13,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:13,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:17:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:13,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:17:13,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:13,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:13,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:13,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569247435] [2023-11-19 05:17:13,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:13,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994117891] [2023-11-19 05:17:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994117891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:13,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:17:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724954338] [2023-11-19 05:17:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:13,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:17:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:17:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:17:13,755 INFO L87 Difference]: Start difference. First operand 218 states and 246 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 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) [2023-11-19 05:17:13,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:13,782 INFO L93 Difference]: Finished difference Result 218 states and 246 transitions. [2023-11-19 05:17:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:17:13,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 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 43 [2023-11-19 05:17:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:13,785 INFO L225 Difference]: With dead ends: 218 [2023-11-19 05:17:13,785 INFO L226 Difference]: Without dead ends: 217 [2023-11-19 05:17:13,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:17:13,786 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 86 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 342 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 [2023-11-19 05:17:13,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 342 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:17:13,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-19 05:17:13,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-11-19 05:17:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 161 states have (on average 1.453416149068323) internal successors, (234), 210 states have internal predecessors, (234), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:17:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 244 transitions. [2023-11-19 05:17:13,797 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 244 transitions. Word has length 43 [2023-11-19 05:17:13,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:13,797 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 244 transitions. [2023-11-19 05:17:13,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 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) [2023-11-19 05:17:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 244 transitions. [2023-11-19 05:17:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 05:17:13,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:13,799 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, 1, 1] [2023-11-19 05:17:13,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:14,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:17:14,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:14,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash 999841099, now seen corresponding path program 1 times [2023-11-19 05:17:14,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:14,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031729127] [2023-11-19 05:17:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:14,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:14,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848537968] [2023-11-19 05:17:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:14,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:14,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:14,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:17:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:14,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:17:14,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:14,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:17:14,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031729127] [2023-11-19 05:17:14,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848537968] [2023-11-19 05:17:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848537968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:14,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:17:14,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:17:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68033530] [2023-11-19 05:17:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:14,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:17:14,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:14,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:17:14,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:17:14,197 INFO L87 Difference]: Start difference. First operand 217 states and 244 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 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) [2023-11-19 05:17:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:14,244 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2023-11-19 05:17:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:17:14,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 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 44 [2023-11-19 05:17:14,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:14,246 INFO L225 Difference]: With dead ends: 298 [2023-11-19 05:17:14,247 INFO L226 Difference]: Without dead ends: 297 [2023-11-19 05:17:14,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:17:14,248 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 83 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:14,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 546 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:17:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-19 05:17:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 232. [2023-11-19 05:17:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 174 states have (on average 1.4597701149425288) internal successors, (254), 224 states have internal predecessors, (254), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:17:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 268 transitions. [2023-11-19 05:17:14,261 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 268 transitions. Word has length 44 [2023-11-19 05:17:14,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:14,261 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 268 transitions. [2023-11-19 05:17:14,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 5 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) [2023-11-19 05:17:14,261 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 268 transitions. [2023-11-19 05:17:14,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 05:17:14,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:14,262 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] [2023-11-19 05:17:14,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 05:17:14,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:14,483 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:14,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1225376691, now seen corresponding path program 1 times [2023-11-19 05:17:14,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:14,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480715411] [2023-11-19 05:17:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:14,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:14,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:14,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912419759] [2023-11-19 05:17:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:14,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:14,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:14,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:14,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:17:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:14,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:17:14,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:14,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:17:14,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:14,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480715411] [2023-11-19 05:17:14,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:14,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912419759] [2023-11-19 05:17:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912419759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:17:14,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [522729905] [2023-11-19 05:17:14,927 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-11-19 05:17:14,927 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:17:14,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:17:14,936 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:17:14,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:17:18,904 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 54 for LOIs [2023-11-19 05:17:18,935 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:17:24,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [522729905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:17:24,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:17:24,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4] total 19 [2023-11-19 05:17:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734699387] [2023-11-19 05:17:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:17:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 05:17:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 05:17:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2023-11-19 05:17:24,182 INFO L87 Difference]: Start difference. First operand 232 states and 268 transitions. Second operand has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 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) [2023-11-19 05:17:28,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 05:17:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:29,613 INFO L93 Difference]: Finished difference Result 274 states and 333 transitions. [2023-11-19 05:17:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 05:17:29,613 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 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 46 [2023-11-19 05:17:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:29,615 INFO L225 Difference]: With dead ends: 274 [2023-11-19 05:17:29,615 INFO L226 Difference]: Without dead ends: 112 [2023-11-19 05:17:29,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 64 SyntacticMatches, 23 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=262, Invalid=668, Unknown=0, NotChecked=0, Total=930 [2023-11-19 05:17:29,617 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 267 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:29,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 4 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 05:17:29,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-19 05:17:29,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 48. [2023-11-19 05:17:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 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) [2023-11-19 05:17:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2023-11-19 05:17:29,626 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2023-11-19 05:17:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2023-11-19 05:17:29,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 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) [2023-11-19 05:17:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2023-11-19 05:17:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 05:17:29,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:29,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:17:29,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:29,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:17:29,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:29,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash 668028293, now seen corresponding path program 1 times [2023-11-19 05:17:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:29,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253042832] [2023-11-19 05:17:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:29,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:29,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:29,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772913299] [2023-11-19 05:17:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:29,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:29,858 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:29,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:17:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:17:29,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:17:29,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:17:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:30,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:17:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:17:30,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:17:30,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253042832] [2023-11-19 05:17:30,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:17:30,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772913299] [2023-11-19 05:17:30,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772913299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:17:30,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001868424] [2023-11-19 05:17:30,309 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-11-19 05:17:30,310 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:17:30,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:17:30,310 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:17:30,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:17:33,385 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 54 for LOIs [2023-11-19 05:17:33,404 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:17:45,322 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6501#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~k~0#1| 32767) (<= 1 |ULTIMATE.start_main_~c~0#1|) (<= 2305843009213693952 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|) (<= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ 9223372036854775806 (* |ULTIMATE.start_main_~y~0#1| 4) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 4))) (<= ~counter~0 100) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4)))' at error location [2023-11-19 05:17:45,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:17:45,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:17:45,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 05:17:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519822835] [2023-11-19 05:17:45,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:17:45,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:17:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:17:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:17:45,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-11-19 05:17:45,325 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 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) [2023-11-19 05:17:45,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:17:45,614 INFO L93 Difference]: Finished difference Result 125 states and 128 transitions. [2023-11-19 05:17:45,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:17:45,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2023-11-19 05:17:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:17:45,615 INFO L225 Difference]: With dead ends: 125 [2023-11-19 05:17:45,616 INFO L226 Difference]: Without dead ends: 124 [2023-11-19 05:17:45,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 93 SyntacticMatches, 24 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2023-11-19 05:17:45,617 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 93 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:17:45,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 62 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:17:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-19 05:17:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-11-19 05:17:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.0084033613445378) internal successors, (120), 119 states have internal predecessors, (120), 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) [2023-11-19 05:17:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2023-11-19 05:17:45,635 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 47 [2023-11-19 05:17:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:17:45,635 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2023-11-19 05:17:45,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 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) [2023-11-19 05:17:45,636 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2023-11-19 05:17:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-19 05:17:45,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:17:45,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1] [2023-11-19 05:17:45,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:17:45,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:45,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-19 05:17:45,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:17:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1718775143, now seen corresponding path program 2 times [2023-11-19 05:17:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:17:45,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887247770] [2023-11-19 05:17:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:17:45,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:17:45,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:17:45,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923086350] [2023-11-19 05:17:45,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:17:45,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:17:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:17:45,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:17:45,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97a8e340-0f73-4246-a6aa-1a8139d86a4a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:18:07,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 05:18:07,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:18:07,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:18:07,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 132 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:18:07,322 INFO L327 TraceCheckSpWp]: Computing backward predicates...