./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/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_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/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_92fda84c-7a2a-4001-a65b-c0d51712e65d/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 bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:33,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:33,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:04:33,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:33,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:33,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:33,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:33,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:33,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:33,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:33,421 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:33,422 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:33,423 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:33,424 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:04:33,425 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:33,425 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:33,425 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:04:33,426 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:04:33,426 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:33,427 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:04:33,427 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:04:33,427 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:04:33,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:33,429 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:33,429 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:04:33,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:04:33,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:04:33,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:33,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:33,431 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:33,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:33,433 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:04:33,433 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:04:33,433 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:04:33,433 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:33,434 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:33,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:33,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:33,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:33,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:33,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:33,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:33,436 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:04:33,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:04:33,436 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:33,437 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:33,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:33,437 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_92fda84c-7a2a-4001-a65b-c0d51712e65d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a [2023-11-19 05:04:33,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:33,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:33,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:33,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:33,761 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:33,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2023-11-19 05:04:36,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:37,057 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:37,058 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2023-11-19 05:04:37,066 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/data/8a91234e5/c5b9eec394dd4b419aa785f46eadf3f5/FLAG8313a80b6 [2023-11-19 05:04:37,083 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/data/8a91234e5/c5b9eec394dd4b419aa785f46eadf3f5 [2023-11-19 05:04:37,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:37,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:37,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:37,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:37,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:37,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c257b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37, skipping insertion in model container [2023-11-19 05:04:37,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,129 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:37,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:37,354 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:37,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:37,401 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:37,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37 WrapperNode [2023-11-19 05:04:37,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:37,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:37,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:37,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:37,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,441 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2023-11-19 05:04:37,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:37,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:37,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:37,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:37,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:37,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:37,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:37,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:37,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (1/1) ... [2023-11-19 05:04:37,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:37,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:37,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:37,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:37,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:37,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:04:37,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:04:37,673 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:37,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:37,829 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:37,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:37,878 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:04:37,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:37 BoogieIcfgContainer [2023-11-19 05:04:37,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:37,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:37,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:37,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:37,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:37" (1/3) ... [2023-11-19 05:04:37,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0e0c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:37, skipping insertion in model container [2023-11-19 05:04:37,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:37" (2/3) ... [2023-11-19 05:04:37,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0e0c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:37, skipping insertion in model container [2023-11-19 05:04:37,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:37" (3/3) ... [2023-11-19 05:04:37,894 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.c [2023-11-19 05:04:37,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:37,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 05:04:37,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:37,970 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;@2b0970f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:37,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 05:04:37,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 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 05:04:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:04:37,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:37,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:04:37,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:04:37,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash 99560, now seen corresponding path program 1 times [2023-11-19 05:04:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:37,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306650425] [2023-11-19 05:04:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:37,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:38,170 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 05:04:38,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306650425] [2023-11-19 05:04:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306650425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:38,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:04:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455087805] [2023-11-19 05:04:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:38,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:04:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:38,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:04:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:04:38,231 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:38,281 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-11-19 05:04:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:04:38,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-19 05:04:38,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:38,290 INFO L225 Difference]: With dead ends: 29 [2023-11-19 05:04:38,291 INFO L226 Difference]: Without dead ends: 16 [2023-11-19 05:04:38,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:04:38,300 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:38,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-19 05:04:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-19 05:04:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 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 05:04:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-19 05:04:38,340 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2023-11-19 05:04:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:38,340 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-19 05:04:38,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-19 05:04:38,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:04:38,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:38,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:04:38,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:04:38,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:04:38,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash 3086412, now seen corresponding path program 1 times [2023-11-19 05:04:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16903848] [2023-11-19 05:04:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:38,383 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:38,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183401561] [2023-11-19 05:04:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:38,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:38,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:38,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:38,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:04:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:38,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:04:38,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:38,509 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 05:04:38,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:04:38,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16903848] [2023-11-19 05:04:38,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183401561] [2023-11-19 05:04:38,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183401561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:04:38,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:04:38,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:04:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707766602] [2023-11-19 05:04:38,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:04:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:04:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:38,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:04:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:38,519 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:38,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:38,553 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2023-11-19 05:04:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:04:38,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:04:38,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:38,555 INFO L225 Difference]: With dead ends: 29 [2023-11-19 05:04:38,555 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 05:04:38,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:04:38,557 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:38,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:04:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 05:04:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 05:04:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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 05:04:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-19 05:04:38,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 4 [2023-11-19 05:04:38,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:38,565 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-19 05:04:38,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:04:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-19 05:04:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:04:38,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:38,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:04:38,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:38,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 05:04:38,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:04:38,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1375170262, now seen corresponding path program 1 times [2023-11-19 05:04:38,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:38,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55135413] [2023-11-19 05:04:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:38,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:38,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:38,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169033312] [2023-11-19 05:04:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:38,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:38,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:04:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:38,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:04:38,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:38,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:04:39,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:39,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55135413] [2023-11-19 05:04:39,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:39,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169033312] [2023-11-19 05:04:39,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169033312] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:39,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [42746417] [2023-11-19 05:04:39,063 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:04:39,063 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:39,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:39,073 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:39,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:40,034 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-19 05:04:40,037 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:40,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '232#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-19 05:04:40,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:40,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:04:40,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-19 05:04:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689482874] [2023-11-19 05:04:40,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:40,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:04:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:04:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:04:40,294 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 05:04:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:40,418 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-11-19 05:04:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:04:40,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 13 [2023-11-19 05:04:40,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:40,420 INFO L225 Difference]: With dead ends: 45 [2023-11-19 05:04:40,420 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 05:04:40,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:04:40,422 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:40,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 24 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:04:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 05:04:40,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-19 05:04:40,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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 05:04:40,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-11-19 05:04:40,431 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 13 [2023-11-19 05:04:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:40,433 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-19 05:04:40,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 05:04:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2023-11-19 05:04:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 05:04:40,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:40,435 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-19 05:04:40,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:40,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 05:04:40,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:04:40,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1100889804, now seen corresponding path program 2 times [2023-11-19 05:04:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:40,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319808343] [2023-11-19 05:04:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:40,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:40,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046633890] [2023-11-19 05:04:40,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:04:40,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:40,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:40,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:04:41,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 05:04:41,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:04:41,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:04:42,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:04:42,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:04:42,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:42,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319808343] [2023-11-19 05:04:42,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:42,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046633890] [2023-11-19 05:04:42,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046633890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:42,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1162533983] [2023-11-19 05:04:42,280 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:04:42,281 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:42,281 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:42,282 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:42,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:42,811 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-19 05:04:42,814 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:43,204 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '586#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-19 05:04:43,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:43,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:04:43,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-19 05:04:43,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978443635] [2023-11-19 05:04:43,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:43,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:04:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:04:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:04:43,209 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:04:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:43,515 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2023-11-19 05:04:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:04:43,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2023-11-19 05:04:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:43,518 INFO L225 Difference]: With dead ends: 78 [2023-11-19 05:04:43,518 INFO L226 Difference]: Without dead ends: 77 [2023-11-19 05:04:43,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:04:43,520 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:43,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:04:43,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-19 05:04:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-11-19 05:04:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 05:04:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2023-11-19 05:04:43,536 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 40 [2023-11-19 05:04:43,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:43,537 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2023-11-19 05:04:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:04:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2023-11-19 05:04:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-19 05:04:43,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:43,542 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2023-11-19 05:04:43,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 05:04:43,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:04:43,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash 120234124, now seen corresponding path program 3 times [2023-11-19 05:04:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402916831] [2023-11-19 05:04:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:43,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:43,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128305832] [2023-11-19 05:04:43,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:04:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:43,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:43,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:04:43,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:04:43,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:04:43,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 05:04:43,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 05:04:44,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-19 05:04:44,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402916831] [2023-11-19 05:04:44,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:44,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128305832] [2023-11-19 05:04:44,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128305832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:44,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803427881] [2023-11-19 05:04:44,670 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:04:44,670 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:44,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:44,671 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:44,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:45,049 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-19 05:04:45,051 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:45,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1381#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-19 05:04:45,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:45,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:04:45,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-19 05:04:45,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820630904] [2023-11-19 05:04:45,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 05:04:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 05:04:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2023-11-19 05:04:45,995 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:04:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:47,158 INFO L93 Difference]: Finished difference Result 162 states and 194 transitions. [2023-11-19 05:04:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:04:47,159 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 94 [2023-11-19 05:04:47,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:47,162 INFO L225 Difference]: With dead ends: 162 [2023-11-19 05:04:47,162 INFO L226 Difference]: Without dead ends: 161 [2023-11-19 05:04:47,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 241 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 05:04:47,165 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 39 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:47,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 418 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:04:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-19 05:04:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-19 05:04:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 05:04:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2023-11-19 05:04:47,212 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 94 [2023-11-19 05:04:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:47,216 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2023-11-19 05:04:47,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:04:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2023-11-19 05:04:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-19 05:04:47,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:47,236 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1] [2023-11-19 05:04:47,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:47,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:47,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:04:47,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1311175692, now seen corresponding path program 4 times [2023-11-19 05:04:47,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:47,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557337320] [2023-11-19 05:04:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:47,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:47,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:47,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668981451] [2023-11-19 05:04:47,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:04:47,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:47,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:47,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:47,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:04:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:04:47,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-19 05:04:47,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:04:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-19 05:04:48,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:04:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-19 05:04:50,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:04:50,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557337320] [2023-11-19 05:04:50,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:04:50,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668981451] [2023-11-19 05:04:50,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668981451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:04:50,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [898503789] [2023-11-19 05:04:50,078 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:04:50,078 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:04:50,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:04:50,079 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:04:50,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:04:50,402 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-11-19 05:04:50,404 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:04:52,786 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3076#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-19 05:04:52,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:04:52,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:04:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-11-19 05:04:52,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825953446] [2023-11-19 05:04:52,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 05:04:52,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 05:04:52,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:04:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 05:04:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2023-11-19 05:04:52,793 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-19 05:04:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:04:56,895 INFO L93 Difference]: Finished difference Result 330 states and 398 transitions. [2023-11-19 05:04:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 05:04:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 202 [2023-11-19 05:04:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:04:56,904 INFO L225 Difference]: With dead ends: 330 [2023-11-19 05:04:56,906 INFO L226 Difference]: Without dead ends: 329 [2023-11-19 05:04:56,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 529 SyntacticMatches, 23 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1697, Invalid=4003, Unknown=0, NotChecked=0, Total=5700 [2023-11-19 05:04:56,917 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 72 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:04:56,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1679 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:04:56,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-19 05:04:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2023-11-19 05:04:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 281 states have (on average 1.00355871886121) internal successors, (282), 281 states have internal predecessors, (282), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-19 05:04:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 374 transitions. [2023-11-19 05:04:56,985 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 374 transitions. Word has length 202 [2023-11-19 05:04:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:04:56,986 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 374 transitions. [2023-11-19 05:04:56,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-19 05:04:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 374 transitions. [2023-11-19 05:04:56,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-11-19 05:04:56,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:56,996 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1] [2023-11-19 05:04:57,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:04:57,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:04:57,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:04:57,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1396562700, now seen corresponding path program 5 times [2023-11-19 05:04:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897166341] [2023-11-19 05:04:57,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:57,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:04:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574848482] [2023-11-19 05:04:57,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:04:57,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:04:57,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:57,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:04:57,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92fda84c-7a2a-4001-a65b-c0d51712e65d/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process