./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f50c7bc2857aa84cb02200a831151d15e1603828dabc8b6cfed5e5d60ae2ee71 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:22:22,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:22:22,265 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:22:22,272 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:22:22,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:22:22,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:22:22,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:22:22,301 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:22:22,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:22:22,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:22:22,303 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:22:22,304 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:22:22,304 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:22:22,305 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:22:22,305 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:22:22,306 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:22:22,307 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:22:22,307 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:22:22,308 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:22:22,309 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:22:22,309 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:22:22,310 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:22:22,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:22:22,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:22:22,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:22:22,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:22:22,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:22:22,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:22:22,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:22:22,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:22:22,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:22:22,321 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:22:22,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:22:22,322 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:22:22,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:22:22,323 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:22:22,323 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:22:22,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:22:22,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:22:22,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:22:22,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:22:22,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:22:22,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:22:22,326 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:22:22,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:22:22,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:22:22,327 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:22:22,327 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:22:22,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:22:22,328 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_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f50c7bc2857aa84cb02200a831151d15e1603828dabc8b6cfed5e5d60ae2ee71 [2023-11-24 23:22:22,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:22:22,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:22:22,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:22:22,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:22:22,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:22:22,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2023-11-24 23:22:25,791 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:22:25,973 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:22:25,973 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2023-11-24 23:22:25,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/data/6f5074c81/622e47520d1247b9bbcec969b6ad23a7/FLAG1b298bb09 [2023-11-24 23:22:25,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/data/6f5074c81/622e47520d1247b9bbcec969b6ad23a7 [2023-11-24 23:22:25,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:22:25,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:22:25,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:22:25,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:22:26,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:22:26,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:22:25" (1/1) ... [2023-11-24 23:22:26,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc609be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26, skipping insertion in model container [2023-11-24 23:22:26,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:22:25" (1/1) ... [2023-11-24 23:22:26,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:22:26,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:22:26,233 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:22:26,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:22:26,276 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:22:26,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26 WrapperNode [2023-11-24 23:22:26,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:22:26,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:22:26,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:22:26,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:22:26,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,346 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 195 [2023-11-24 23:22:26,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:22:26,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:22:26,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:22:26,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:22:26,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:22:26,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:22:26,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:22:26,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:22:26,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (1/1) ... [2023-11-24 23:22:26,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:22:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:26,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:22:26,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:22:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:22:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:22:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:22:26,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:22:26,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:22:26,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:22:26,549 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:22:26,552 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:22:27,519 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:22:27,554 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:22:27,554 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:22:27,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:22:27 BoogieIcfgContainer [2023-11-24 23:22:27,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:22:27,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:22:27,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:22:27,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:22:27,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:22:25" (1/3) ... [2023-11-24 23:22:27,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c05aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:22:27, skipping insertion in model container [2023-11-24 23:22:27,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:22:26" (2/3) ... [2023-11-24 23:22:27,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c05aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:22:27, skipping insertion in model container [2023-11-24 23:22:27,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:22:27" (3/3) ... [2023-11-24 23:22:27,567 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound2.c [2023-11-24 23:22:27,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:22:27,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 140 error locations. [2023-11-24 23:22:27,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:22:27,671 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;@7236e088, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:22:27,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-24 23:22:27,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 146 states have (on average 1.9794520547945205) internal successors, (289), 286 states have internal predecessors, (289), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:22:27,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:22:27,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:27,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:22:27,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:27,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash 368288, now seen corresponding path program 1 times [2023-11-24 23:22:27,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:27,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221505821] [2023-11-24 23:22:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:27,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:27,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:27,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221505821] [2023-11-24 23:22:27,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221505821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:27,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936432913] [2023-11-24 23:22:27,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:27,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:27,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:27,967 INFO L87 Difference]: Start difference. First operand has 299 states, 146 states have (on average 1.9794520547945205) internal successors, (289), 286 states have internal predecessors, (289), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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) [2023-11-24 23:22:28,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:28,161 INFO L93 Difference]: Finished difference Result 481 states and 501 transitions. [2023-11-24 23:22:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:22:28,164 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 [2023-11-24 23:22:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:28,185 INFO L225 Difference]: With dead ends: 481 [2023-11-24 23:22:28,186 INFO L226 Difference]: Without dead ends: 293 [2023-11-24 23:22:28,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:22:28,196 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 4 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 886 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 [2023-11-24 23:22:28,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 886 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:22:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-24 23:22:28,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-11-24 23:22:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 149 states have (on average 1.8993288590604027) internal successors, (283), 281 states have internal predecessors, (283), 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) [2023-11-24 23:22:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 303 transitions. [2023-11-24 23:22:28,341 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 303 transitions. Word has length 3 [2023-11-24 23:22:28,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:28,341 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 303 transitions. [2023-11-24 23:22:28,342 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) [2023-11-24 23:22:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 303 transitions. [2023-11-24 23:22:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:22:28,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:28,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:22:28,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:22:28,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:28,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1913193205, now seen corresponding path program 1 times [2023-11-24 23:22:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569122767] [2023-11-24 23:22:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:28,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:22:28,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:28,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569122767] [2023-11-24 23:22:28,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569122767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:28,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:28,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:22:28,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200223604] [2023-11-24 23:22:28,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:28,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:28,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:28,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:28,413 INFO L87 Difference]: Start difference. First operand 293 states and 303 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) [2023-11-24 23:22:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:28,581 INFO L93 Difference]: Finished difference Result 561 states and 581 transitions. [2023-11-24 23:22:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:28,582 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 [2023-11-24 23:22:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:28,586 INFO L225 Difference]: With dead ends: 561 [2023-11-24 23:22:28,586 INFO L226 Difference]: Without dead ends: 541 [2023-11-24 23:22:28,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:28,589 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 237 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:28,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 604 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:22:28,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-11-24 23:22:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 351. [2023-11-24 23:22:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 202 states have (on average 1.801980198019802) internal successors, (364), 334 states have internal predecessors, (364), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-24 23:22:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 394 transitions. [2023-11-24 23:22:28,619 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 394 transitions. Word has length 6 [2023-11-24 23:22:28,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:28,620 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 394 transitions. [2023-11-24 23:22:28,620 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) [2023-11-24 23:22:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 394 transitions. [2023-11-24 23:22:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 23:22:28,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:28,622 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:28,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:22:28,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:28,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1165381364, now seen corresponding path program 1 times [2023-11-24 23:22:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:28,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131906087] [2023-11-24 23:22:28,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:28,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:28,646 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:28,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677544464] [2023-11-24 23:22:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:28,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:28,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:28,652 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:28,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:22:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:28,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:22:28,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:29,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:29,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:29,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131906087] [2023-11-24 23:22:29,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:29,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677544464] [2023-11-24 23:22:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677544464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:29,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:29,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981697877] [2023-11-24 23:22:29,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:29,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:29,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:29,017 INFO L87 Difference]: Start difference. First operand 351 states and 394 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:31,188 INFO L93 Difference]: Finished difference Result 549 states and 569 transitions. [2023-11-24 23:22:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:31,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-24 23:22:31,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:31,199 INFO L225 Difference]: With dead ends: 549 [2023-11-24 23:22:31,199 INFO L226 Difference]: Without dead ends: 519 [2023-11-24 23:22:31,200 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 [2023-11-24 23:22:31,203 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 197 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:31,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 272 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 23:22:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-24 23:22:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 434. [2023-11-24 23:22:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 280 states have (on average 1.7428571428571429) internal successors, (488), 412 states have internal predecessors, (488), 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) [2023-11-24 23:22:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 528 transitions. [2023-11-24 23:22:31,241 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 528 transitions. Word has length 33 [2023-11-24 23:22:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:31,242 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 528 transitions. [2023-11-24 23:22:31,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 528 transitions. [2023-11-24 23:22:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 23:22:31,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:31,244 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:31,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:31,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-24 23:22:31,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:31,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1767083827, now seen corresponding path program 1 times [2023-11-24 23:22:31,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:31,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715045337] [2023-11-24 23:22:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:31,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:31,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486843696] [2023-11-24 23:22:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:31,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:31,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:31,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:31,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:22:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:31,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:22:31,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:31,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:31,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715045337] [2023-11-24 23:22:31,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486843696] [2023-11-24 23:22:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486843696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:31,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844720982] [2023-11-24 23:22:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:31,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:31,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:31,705 INFO L87 Difference]: Start difference. First operand 434 states and 528 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:32,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:32,880 INFO L93 Difference]: Finished difference Result 519 states and 539 transitions. [2023-11-24 23:22:32,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:32,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2023-11-24 23:22:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:32,884 INFO L225 Difference]: With dead ends: 519 [2023-11-24 23:22:32,884 INFO L226 Difference]: Without dead ends: 510 [2023-11-24 23:22:32,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:32,886 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 187 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:32,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 329 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:22:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-11-24 23:22:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 436. [2023-11-24 23:22:32,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 282 states have (on average 1.7127659574468086) internal successors, (483), 414 states have internal predecessors, (483), 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) [2023-11-24 23:22:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 523 transitions. [2023-11-24 23:22:32,903 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 523 transitions. Word has length 34 [2023-11-24 23:22:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:32,904 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 523 transitions. [2023-11-24 23:22:32,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 523 transitions. [2023-11-24 23:22:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 23:22:32,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:32,906 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:32,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:33,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:33,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:33,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1054976302, now seen corresponding path program 1 times [2023-11-24 23:22:33,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285613978] [2023-11-24 23:22:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:33,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:33,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848512478] [2023-11-24 23:22:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:33,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:33,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:33,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:33,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:22:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:33,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:22:33,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:33,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:33,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:33,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285613978] [2023-11-24 23:22:33,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:33,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848512478] [2023-11-24 23:22:33,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848512478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:33,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:33,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240907960] [2023-11-24 23:22:33,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:33,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:33,288 INFO L87 Difference]: Start difference. First operand 436 states and 523 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:34,453 INFO L93 Difference]: Finished difference Result 505 states and 530 transitions. [2023-11-24 23:22:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2023-11-24 23:22:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:34,457 INFO L225 Difference]: With dead ends: 505 [2023-11-24 23:22:34,458 INFO L226 Difference]: Without dead ends: 500 [2023-11-24 23:22:34,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:34,459 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 176 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:34,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 494 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:22:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-24 23:22:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 436. [2023-11-24 23:22:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 282 states have (on average 1.6950354609929077) internal successors, (478), 414 states have internal predecessors, (478), 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) [2023-11-24 23:22:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 518 transitions. [2023-11-24 23:22:34,500 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 518 transitions. Word has length 35 [2023-11-24 23:22:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:34,504 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 518 transitions. [2023-11-24 23:22:34,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 518 transitions. [2023-11-24 23:22:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-24 23:22:34,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:34,508 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:34,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:34,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:34,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:34,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:34,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1655472913, now seen corresponding path program 1 times [2023-11-24 23:22:34,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:34,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162882007] [2023-11-24 23:22:34,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:34,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:34,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:34,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251704165] [2023-11-24 23:22:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:34,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:34,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:34,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:22:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:34,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:22:34,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:34,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:34,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:34,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162882007] [2023-11-24 23:22:34,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:34,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251704165] [2023-11-24 23:22:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251704165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:34,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:34,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:34,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772413213] [2023-11-24 23:22:34,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:34,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:34,873 INFO L87 Difference]: Start difference. First operand 436 states and 518 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:35,459 INFO L93 Difference]: Finished difference Result 505 states and 525 transitions. [2023-11-24 23:22:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:35,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-11-24 23:22:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:35,463 INFO L225 Difference]: With dead ends: 505 [2023-11-24 23:22:35,463 INFO L226 Difference]: Without dead ends: 500 [2023-11-24 23:22:35,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:35,464 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 173 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:35,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 552 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:22:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-24 23:22:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 436. [2023-11-24 23:22:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 282 states have (on average 1.677304964539007) internal successors, (473), 414 states have internal predecessors, (473), 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) [2023-11-24 23:22:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 513 transitions. [2023-11-24 23:22:35,484 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 513 transitions. Word has length 36 [2023-11-24 23:22:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:35,485 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 513 transitions. [2023-11-24 23:22:35,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:35,485 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 513 transitions. [2023-11-24 23:22:35,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-24 23:22:35,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:35,486 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:35,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:22:35,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:22:35,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:35,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:35,687 INFO L85 PathProgramCache]: Analyzing trace with hash 219947344, now seen corresponding path program 1 times [2023-11-24 23:22:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905119298] [2023-11-24 23:22:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:35,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:35,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688965760] [2023-11-24 23:22:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:35,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:35,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:35,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:35,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:22:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:35,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:22:35,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:35,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:35,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:35,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905119298] [2023-11-24 23:22:35,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:35,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688965760] [2023-11-24 23:22:35,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688965760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:35,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:22:35,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860399380] [2023-11-24 23:22:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:35,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:35,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:35,850 INFO L87 Difference]: Start difference. First operand 436 states and 513 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:36,830 INFO L93 Difference]: Finished difference Result 500 states and 520 transitions. [2023-11-24 23:22:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:22:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2023-11-24 23:22:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:36,834 INFO L225 Difference]: With dead ends: 500 [2023-11-24 23:22:36,835 INFO L226 Difference]: Without dead ends: 498 [2023-11-24 23:22:36,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:36,836 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 362 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:36,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 421 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:22:36,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-11-24 23:22:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 436. [2023-11-24 23:22:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 282 states have (on average 1.6702127659574468) internal successors, (471), 414 states have internal predecessors, (471), 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) [2023-11-24 23:22:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 511 transitions. [2023-11-24 23:22:36,856 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 511 transitions. Word has length 37 [2023-11-24 23:22:36,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:36,857 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 511 transitions. [2023-11-24 23:22:36,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:36,857 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 511 transitions. [2023-11-24 23:22:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-24 23:22:36,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:36,858 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:36,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:37,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:22:37,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:37,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1771566831, now seen corresponding path program 1 times [2023-11-24 23:22:37,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:37,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65329775] [2023-11-24 23:22:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:37,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:37,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443253485] [2023-11-24 23:22:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:37,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:37,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:37,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:22:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:37,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:22:37,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:37,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:37,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65329775] [2023-11-24 23:22:37,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:37,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443253485] [2023-11-24 23:22:37,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443253485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:37,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:37,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:22:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899647171] [2023-11-24 23:22:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:37,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:37,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:37,222 INFO L87 Difference]: Start difference. First operand 436 states and 511 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:38,303 INFO L93 Difference]: Finished difference Result 498 states and 518 transitions. [2023-11-24 23:22:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:22:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2023-11-24 23:22:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:38,307 INFO L225 Difference]: With dead ends: 498 [2023-11-24 23:22:38,307 INFO L226 Difference]: Without dead ends: 496 [2023-11-24 23:22:38,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:38,308 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 357 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:38,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 373 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:22:38,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-24 23:22:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 436. [2023-11-24 23:22:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 282 states have (on average 1.6631205673758864) internal successors, (469), 414 states have internal predecessors, (469), 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) [2023-11-24 23:22:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 509 transitions. [2023-11-24 23:22:38,328 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 509 transitions. Word has length 38 [2023-11-24 23:22:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:38,328 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 509 transitions. [2023-11-24 23:22:38,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 509 transitions. [2023-11-24 23:22:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:22:38,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:38,330 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:38,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-24 23:22:38,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:22:38,535 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:38,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash -189230700, now seen corresponding path program 1 times [2023-11-24 23:22:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:38,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246193573] [2023-11-24 23:22:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:38,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:38,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2110687441] [2023-11-24 23:22:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:38,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:38,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:22:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:38,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:22:38,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:38,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:38,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246193573] [2023-11-24 23:22:38,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:38,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110687441] [2023-11-24 23:22:38,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110687441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:38,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:38,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:38,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128827863] [2023-11-24 23:22:38,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:38,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:38,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:38,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:38,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:38,837 INFO L87 Difference]: Start difference. First operand 436 states and 509 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:39,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:39,823 INFO L93 Difference]: Finished difference Result 496 states and 516 transitions. [2023-11-24 23:22:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-11-24 23:22:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:39,828 INFO L225 Difference]: With dead ends: 496 [2023-11-24 23:22:39,828 INFO L226 Difference]: Without dead ends: 482 [2023-11-24 23:22:39,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:39,829 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 150 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:39,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 235 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:22:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-24 23:22:39,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 439. [2023-11-24 23:22:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 285 states have (on average 1.6175438596491227) internal successors, (461), 417 states have internal predecessors, (461), 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) [2023-11-24 23:22:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 501 transitions. [2023-11-24 23:22:39,857 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 501 transitions. Word has length 41 [2023-11-24 23:22:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:39,858 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 501 transitions. [2023-11-24 23:22:39,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 501 transitions. [2023-11-24 23:22:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-24 23:22:39,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:39,859 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:39,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-24 23:22:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:22:40,068 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:40,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1571184299, now seen corresponding path program 1 times [2023-11-24 23:22:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:40,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953074824] [2023-11-24 23:22:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:40,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:40,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:40,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80348604] [2023-11-24 23:22:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:40,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:40,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:40,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:40,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:22:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:40,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:22:40,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:40,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:40,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:40,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953074824] [2023-11-24 23:22:40,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:40,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80348604] [2023-11-24 23:22:40,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80348604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:40,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:40,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:22:40,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847152108] [2023-11-24 23:22:40,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:40,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:40,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:40,901 INFO L87 Difference]: Start difference. First operand 439 states and 501 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:42,381 INFO L93 Difference]: Finished difference Result 482 states and 502 transitions. [2023-11-24 23:22:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:42,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2023-11-24 23:22:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:42,384 INFO L225 Difference]: With dead ends: 482 [2023-11-24 23:22:42,385 INFO L226 Difference]: Without dead ends: 479 [2023-11-24 23:22:42,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:42,386 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 170 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:42,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 488 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 23:22:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-11-24 23:22:42,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 439. [2023-11-24 23:22:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 285 states have (on average 1.6070175438596492) internal successors, (458), 417 states have internal predecessors, (458), 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) [2023-11-24 23:22:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 498 transitions. [2023-11-24 23:22:42,405 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 498 transitions. Word has length 42 [2023-11-24 23:22:42,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:42,405 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 498 transitions. [2023-11-24 23:22:42,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:42,405 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 498 transitions. [2023-11-24 23:22:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 23:22:42,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:42,407 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:42,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:42,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:22:42,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:42,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1350485607, now seen corresponding path program 1 times [2023-11-24 23:22:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755168728] [2023-11-24 23:22:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:42,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:42,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008329872] [2023-11-24 23:22:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:42,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:42,624 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:42,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:22:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:42,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:22:42,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-24 23:22:42,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:42,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:42,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755168728] [2023-11-24 23:22:42,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:42,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008329872] [2023-11-24 23:22:42,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008329872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:42,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:42,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:22:42,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676892624] [2023-11-24 23:22:42,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:42,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:42,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:42,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:42,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:42,962 INFO L87 Difference]: Start difference. First operand 439 states and 498 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:44,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:22:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:44,922 INFO L93 Difference]: Finished difference Result 479 states and 499 transitions. [2023-11-24 23:22:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:44,923 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2023-11-24 23:22:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:44,926 INFO L225 Difference]: With dead ends: 479 [2023-11-24 23:22:44,926 INFO L226 Difference]: Without dead ends: 458 [2023-11-24 23:22:44,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:44,927 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 301 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:44,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 347 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 23:22:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-24 23:22:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 423. [2023-11-24 23:22:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 270 states have (on average 1.625925925925926) internal successors, (439), 402 states have internal predecessors, (439), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:22:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 477 transitions. [2023-11-24 23:22:44,944 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 477 transitions. Word has length 46 [2023-11-24 23:22:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:44,945 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 477 transitions. [2023-11-24 23:22:44,945 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, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-24 23:22:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 477 transitions. [2023-11-24 23:22:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-24 23:22:44,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:44,947 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:44,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:45,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:22:45,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:45,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -440215715, now seen corresponding path program 1 times [2023-11-24 23:22:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:45,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201039424] [2023-11-24 23:22:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:45,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:45,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98953498] [2023-11-24 23:22:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:45,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:45,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:45,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:45,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:22:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:45,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:22:45,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:22:45,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:45,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201039424] [2023-11-24 23:22:45,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98953498] [2023-11-24 23:22:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98953498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:45,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:22:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104583709] [2023-11-24 23:22:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:45,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:22:45,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:22:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:45,333 INFO L87 Difference]: Start difference. First operand 423 states and 477 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:22:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:46,579 INFO L93 Difference]: Finished difference Result 462 states and 481 transitions. [2023-11-24 23:22:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:22:46,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2023-11-24 23:22:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:46,583 INFO L225 Difference]: With dead ends: 462 [2023-11-24 23:22:46,583 INFO L226 Difference]: Without dead ends: 456 [2023-11-24 23:22:46,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:22:46,584 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 118 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:46,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 431 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:22:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-11-24 23:22:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 425. [2023-11-24 23:22:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 272 states have (on average 1.6066176470588236) internal successors, (437), 404 states have internal predecessors, (437), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:22:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 475 transitions. [2023-11-24 23:22:46,611 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 475 transitions. Word has length 53 [2023-11-24 23:22:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:46,611 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 475 transitions. [2023-11-24 23:22:46,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:22:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 475 transitions. [2023-11-24 23:22:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-24 23:22:46,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:46,613 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:46,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:46,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:22:46,818 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:46,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash 265824225, now seen corresponding path program 1 times [2023-11-24 23:22:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:46,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446045138] [2023-11-24 23:22:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:46,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:46,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672272810] [2023-11-24 23:22:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:46,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:46,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:46,830 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:46,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:22:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:46,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:22:46,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:22:46,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:46,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:46,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446045138] [2023-11-24 23:22:46,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:46,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672272810] [2023-11-24 23:22:46,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672272810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:46,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:22:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526750515] [2023-11-24 23:22:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:46,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:46,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:46,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:46,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:46,989 INFO L87 Difference]: Start difference. First operand 425 states and 475 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:22:47,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:22:47,620 INFO L93 Difference]: Finished difference Result 456 states and 475 transitions. [2023-11-24 23:22:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:22:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2023-11-24 23:22:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:22:47,624 INFO L225 Difference]: With dead ends: 456 [2023-11-24 23:22:47,624 INFO L226 Difference]: Without dead ends: 454 [2023-11-24 23:22:47,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:47,625 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 149 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:22:47,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 495 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:22:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-24 23:22:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 425. [2023-11-24 23:22:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 272 states have (on average 1.599264705882353) internal successors, (435), 404 states have internal predecessors, (435), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 23:22:47,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 473 transitions. [2023-11-24 23:22:47,644 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 473 transitions. Word has length 57 [2023-11-24 23:22:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:22:47,645 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 473 transitions. [2023-11-24 23:22:47,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:22:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 473 transitions. [2023-11-24 23:22:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-24 23:22:47,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:22:47,652 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:22:47,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-24 23:22:47,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:47,859 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:22:47,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:22:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1777510299, now seen corresponding path program 1 times [2023-11-24 23:22:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:22:47,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708856290] [2023-11-24 23:22:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:22:47,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:22:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829290535] [2023-11-24 23:22:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:22:47,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:22:47,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:22:47,873 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:22:47,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:22:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:22:47,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:22:47,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:22:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:22:48,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:22:48,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:22:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708856290] [2023-11-24 23:22:48,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:22:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829290535] [2023-11-24 23:22:48,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829290535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:22:48,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:22:48,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:22:48,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199946252] [2023-11-24 23:22:48,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:22:48,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:22:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:22:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:22:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:22:48,174 INFO L87 Difference]: Start difference. First operand 425 states and 473 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:22:51,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:22:52,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:22:54,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:22:58,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:23:00,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-24 23:23:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:03,038 INFO L93 Difference]: Finished difference Result 538 states and 595 transitions. [2023-11-24 23:23:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:23:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2023-11-24 23:23:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:03,042 INFO L225 Difference]: With dead ends: 538 [2023-11-24 23:23:03,042 INFO L226 Difference]: Without dead ends: 495 [2023-11-24 23:23:03,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:23:03,044 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 439 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:03,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 220 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 329 Invalid, 1 Unknown, 0 Unchecked, 14.8s Time] [2023-11-24 23:23:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-11-24 23:23:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 445. [2023-11-24 23:23:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 316 states have (on average 1.5696202531645569) internal successors, (496), 421 states have internal predecessors, (496), 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) [2023-11-24 23:23:03,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 540 transitions. [2023-11-24 23:23:03,074 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 540 transitions. Word has length 61 [2023-11-24 23:23:03,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:03,074 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 540 transitions. [2023-11-24 23:23:03,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-24 23:23:03,075 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 540 transitions. [2023-11-24 23:23:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-24 23:23:03,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:03,076 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:23:03,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:23:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:03,282 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:23:03,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash 576130743, now seen corresponding path program 1 times [2023-11-24 23:23:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278947912] [2023-11-24 23:23:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:03,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:23:03,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552191767] [2023-11-24 23:23:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:03,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:03,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:23:03,306 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:23:03,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:23:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:23:03,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:23:03,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:23:03,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:23:03,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:03,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278947912] [2023-11-24 23:23:03,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:03,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552191767] [2023-11-24 23:23:03,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552191767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:23:03,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:23:03,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:23:03,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835879165] [2023-11-24 23:23:03,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:23:03,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:23:03,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:23:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:23:03,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:23:03,519 INFO L87 Difference]: Start difference. First operand 445 states and 540 transitions. Second operand has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-24 23:23:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:03,592 INFO L93 Difference]: Finished difference Result 445 states and 540 transitions. [2023-11-24 23:23:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:23:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2023-11-24 23:23:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:03,596 INFO L225 Difference]: With dead ends: 445 [2023-11-24 23:23:03,596 INFO L226 Difference]: Without dead ends: 443 [2023-11-24 23:23:03,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:23:03,597 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 193 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:03,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 238 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:23:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-24 23:23:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-11-24 23:23:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 316 states have (on average 1.5506329113924051) internal successors, (490), 419 states have internal predecessors, (490), 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) [2023-11-24 23:23:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 534 transitions. [2023-11-24 23:23:03,617 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 534 transitions. Word has length 75 [2023-11-24 23:23:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:03,617 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 534 transitions. [2023-11-24 23:23:03,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 29.0) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-24 23:23:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 534 transitions. [2023-11-24 23:23:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-24 23:23:03,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:03,619 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:23:03,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-24 23:23:03,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:03,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:23:03,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash 680184029, now seen corresponding path program 1 times [2023-11-24 23:23:03,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:03,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940949519] [2023-11-24 23:23:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:03,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:03,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:23:03,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23735842] [2023-11-24 23:23:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:03,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:03,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:23:03,846 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:23:03,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-24 23:23:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:23:03,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:23:03,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:23:04,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:23:04,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940949519] [2023-11-24 23:23:04,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:04,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23735842] [2023-11-24 23:23:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23735842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:23:04,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:23:04,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:23:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814927549] [2023-11-24 23:23:04,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:23:04,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:23:04,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:23:04,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:23:04,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:23:04,013 INFO L87 Difference]: Start difference. First operand 443 states and 534 transitions. Second operand has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:23:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:04,435 INFO L93 Difference]: Finished difference Result 466 states and 534 transitions. [2023-11-24 23:23:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:23:04,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2023-11-24 23:23:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:04,439 INFO L225 Difference]: With dead ends: 466 [2023-11-24 23:23:04,439 INFO L226 Difference]: Without dead ends: 464 [2023-11-24 23:23:04,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:23:04,440 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 150 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:04,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 719 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:23:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-24 23:23:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 443. [2023-11-24 23:23:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 316 states have (on average 1.5443037974683544) internal successors, (488), 419 states have internal predecessors, (488), 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) [2023-11-24 23:23:04,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 532 transitions. [2023-11-24 23:23:04,460 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 532 transitions. Word has length 76 [2023-11-24 23:23:04,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:04,460 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 532 transitions. [2023-11-24 23:23:04,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-24 23:23:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 532 transitions. [2023-11-24 23:23:04,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-24 23:23:04,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:04,462 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:23:04,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-24 23:23:04,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 23:23:04,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:23:04,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash -389131399, now seen corresponding path program 1 times [2023-11-24 23:23:04,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:04,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362852442] [2023-11-24 23:23:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:04,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:04,682 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:23:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074895712] [2023-11-24 23:23:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:04,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:23:04,684 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:23:04,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-24 23:23:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:23:04,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:23:04,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:23:04,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:23:04,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362852442] [2023-11-24 23:23:04,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074895712] [2023-11-24 23:23:04,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074895712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:23:04,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:23:04,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:23:04,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501795932] [2023-11-24 23:23:04,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:23:04,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:23:04,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:23:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:23:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:23:04,830 INFO L87 Difference]: Start difference. First operand 443 states and 532 transitions. Second operand has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-24 23:23:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:05,605 INFO L93 Difference]: Finished difference Result 464 states and 532 transitions. [2023-11-24 23:23:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:23:05,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2023-11-24 23:23:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:05,609 INFO L225 Difference]: With dead ends: 464 [2023-11-24 23:23:05,609 INFO L226 Difference]: Without dead ends: 456 [2023-11-24 23:23:05,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:23:05,610 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 66 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:05,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 470 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 23:23:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-11-24 23:23:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 443. [2023-11-24 23:23:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 316 states have (on average 1.518987341772152) internal successors, (480), 419 states have internal predecessors, (480), 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) [2023-11-24 23:23:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 524 transitions. [2023-11-24 23:23:05,629 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 524 transitions. Word has length 77 [2023-11-24 23:23:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:05,630 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 524 transitions. [2023-11-24 23:23:05,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-24 23:23:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 524 transitions. [2023-11-24 23:23:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-24 23:23:05,631 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:05,631 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:23:05,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-24 23:23:05,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-24 23:23:05,837 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:23:05,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash -636718293, now seen corresponding path program 1 times [2023-11-24 23:23:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:05,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415911849] [2023-11-24 23:23:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:05,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:23:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375846278] [2023-11-24 23:23:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:05,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:23:05,859 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:23:05,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-24 23:23:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:23:05,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:23:05,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:23:06,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:23:06,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:06,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415911849] [2023-11-24 23:23:06,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:06,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375846278] [2023-11-24 23:23:06,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375846278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:23:06,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:23:06,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:23:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495583472] [2023-11-24 23:23:06,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:23:06,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:23:06,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:23:06,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:23:06,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:23:06,046 INFO L87 Difference]: Start difference. First operand 443 states and 524 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-24 23:23:06,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:06,097 INFO L93 Difference]: Finished difference Result 443 states and 524 transitions. [2023-11-24 23:23:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:23:06,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2023-11-24 23:23:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:06,100 INFO L225 Difference]: With dead ends: 443 [2023-11-24 23:23:06,100 INFO L226 Difference]: Without dead ends: 442 [2023-11-24 23:23:06,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:23:06,101 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 207 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:06,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 522 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:23:06,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-24 23:23:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2023-11-24 23:23:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 316 states have (on average 1.5158227848101267) internal successors, (479), 418 states have internal predecessors, (479), 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) [2023-11-24 23:23:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 523 transitions. [2023-11-24 23:23:06,138 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 523 transitions. Word has length 77 [2023-11-24 23:23:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:06,139 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 523 transitions. [2023-11-24 23:23:06,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-24 23:23:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 523 transitions. [2023-11-24 23:23:06,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-24 23:23:06,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:06,141 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:23:06,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-24 23:23:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-24 23:23:06,347 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:23:06,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1736569438, now seen corresponding path program 1 times [2023-11-24 23:23:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813610034] [2023-11-24 23:23:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:06,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:23:06,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289113119] [2023-11-24 23:23:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:06,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:23:06,360 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:23:06,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-24 23:23:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:23:06,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:23:06,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:23:06,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:23:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:23:06,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:06,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813610034] [2023-11-24 23:23:06,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:06,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289113119] [2023-11-24 23:23:06,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289113119] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:23:06,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [292699324] [2023-11-24 23:23:06,736 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2023-11-24 23:23:06,736 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:23:06,741 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:23:06,747 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:23:06,748 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:23:11,444 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2023-11-24 23:23:11,445 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:23:13,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [292699324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:23:13,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:23:13,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 5] total 22 [2023-11-24 23:23:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920882105] [2023-11-24 23:23:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:23:13,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 23:23:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:23:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 23:23:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:23:13,680 INFO L87 Difference]: Start difference. First operand 442 states and 523 transitions. Second operand has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 23:23:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:23:17,792 INFO L93 Difference]: Finished difference Result 487 states and 566 transitions. [2023-11-24 23:23:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 23:23:17,793 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2023-11-24 23:23:17,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:23:17,795 INFO L225 Difference]: With dead ends: 487 [2023-11-24 23:23:17,795 INFO L226 Difference]: Without dead ends: 267 [2023-11-24 23:23:17,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 169 SyntacticMatches, 42 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-11-24 23:23:17,797 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 460 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:23:17,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 64 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-24 23:23:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2023-11-24 23:23:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 199. [2023-11-24 23:23:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 166 states have (on average 1.1325301204819278) internal successors, (188), 183 states have internal predecessors, (188), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-24 23:23:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 216 transitions. [2023-11-24 23:23:17,813 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 216 transitions. Word has length 78 [2023-11-24 23:23:17,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:23:17,813 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 216 transitions. [2023-11-24 23:23:17,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 23:23:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 216 transitions. [2023-11-24 23:23:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-24 23:23:17,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:23:17,815 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:23:17,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-24 23:23:18,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:18,020 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 137 more)] === [2023-11-24 23:23:18,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:23:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash -677897490, now seen corresponding path program 1 times [2023-11-24 23:23:18,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:23:18,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751735587] [2023-11-24 23:23:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:18,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:23:18,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:23:18,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198189633] [2023-11-24 23:23:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:23:18,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:23:18,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:23:18,032 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:23:18,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52f172ff-e59a-44c6-b294-28ea91f3cfbb/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-24 23:23:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:23:18,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:23:18,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:23:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:23:18,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:23:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-24 23:23:18,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:23:18,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751735587] [2023-11-24 23:23:18,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:23:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198189633] [2023-11-24 23:23:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198189633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:23:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [444427547] [2023-11-24 23:23:18,333 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2023-11-24 23:23:18,334 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:23:18,334 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:23:18,334 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:23:18,335 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs