./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:20:51,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:20:51,381 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:20:51,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:20:51,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:20:51,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:20:51,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:20:51,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:20:51,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:20:51,453 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:20:51,454 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:20:51,455 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:20:51,456 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:20:51,458 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:20:51,458 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:20:51,459 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:20:51,459 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:20:51,460 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:20:51,460 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:20:51,461 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:20:51,461 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:20:51,462 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:20:51,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:20:51,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:20:51,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:20:51,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:20:51,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:20:51,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:20:51,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:20:51,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:20:51,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:20:51,468 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:20:51,468 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:20:51,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:20:51,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:20:51,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:20:51,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:20:51,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:20:51,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:51,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:20:51,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:20:51,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:20:51,472 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:20:51,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:20:51,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:20:51,474 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:20:51,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:20:51,474 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_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d [2023-11-19 05:20:51,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:20:51,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:20:51,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:20:51,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:20:51,853 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:20:51,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2023-11-19 05:20:55,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:20:55,333 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:20:55,334 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2023-11-19 05:20:55,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/data/a6114aab9/3ec5481b80094e2987d40ed1c66b6294/FLAG59daf73f4 [2023-11-19 05:20:55,360 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/data/a6114aab9/3ec5481b80094e2987d40ed1c66b6294 [2023-11-19 05:20:55,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:20:55,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:20:55,373 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:55,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:20:55,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:20:55,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33821017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55, skipping insertion in model container [2023-11-19 05:20:55,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:20:55,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:55,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:20:55,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:20:55,698 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:20:55,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55 WrapperNode [2023-11-19 05:20:55,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:20:55,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:55,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:20:55,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:20:55,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,739 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-19 05:20:55,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:20:55,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:20:55,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:20:55,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:20:55,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:20:55,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:20:55,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:20:55,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:20:55,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (1/1) ... [2023-11-19 05:20:55,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:20:55,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:55,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:20:55,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:20:55,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:20:55,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:20:55,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:20:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:20:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:20:55,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:20:55,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:20:55,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:20:55,910 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:20:55,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:20:56,243 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:20:56,288 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:20:56,288 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:20:56,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:56 BoogieIcfgContainer [2023-11-19 05:20:56,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:20:56,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:20:56,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:20:56,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:20:56,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:20:55" (1/3) ... [2023-11-19 05:20:56,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692295b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:56, skipping insertion in model container [2023-11-19 05:20:56,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:20:55" (2/3) ... [2023-11-19 05:20:56,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692295b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:20:56, skipping insertion in model container [2023-11-19 05:20:56,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:20:56" (3/3) ... [2023-11-19 05:20:56,305 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2023-11-19 05:20:56,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:20:56,327 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 05:20:56,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:20:56,403 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;@7c0dd020, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:20:56,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 05:20:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 25 states have (on average 1.76) internal successors, (44), 41 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:20:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:20:56,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:56,420 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:20:56,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:20:56,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash 436529125, now seen corresponding path program 1 times [2023-11-19 05:20:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:56,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102794300] [2023-11-19 05:20:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:56,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:20:56,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886380942] [2023-11-19 05:20:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:56,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:56,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:56,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:56,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:20:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:56,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:20:56,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:20:56,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:20:57,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:57,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102794300] [2023-11-19 05:20:57,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:20:57,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886380942] [2023-11-19 05:20:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886380942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:20:57,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [318978517] [2023-11-19 05:20:57,232 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:20:57,232 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:20:57,237 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:20:57,244 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:20:57,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:20:57,982 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:20:57,984 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:20:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [318978517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:58,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:20:58,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 13 [2023-11-19 05:20:58,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954217905] [2023-11-19 05:20:58,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:58,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:20:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:58,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:20:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:20:58,502 INFO L87 Difference]: Start difference. First operand has 49 states, 25 states have (on average 1.76) internal successors, (44), 41 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:20:58,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:58,879 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2023-11-19 05:20:58,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:20:58,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2023-11-19 05:20:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:58,891 INFO L225 Difference]: With dead ends: 78 [2023-11-19 05:20:58,892 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 05:20:58,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:20:58,903 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 246 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:58,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 44 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:20:58,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 05:20:58,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-19 05:20:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.4) internal successors, (49), 46 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:20:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2023-11-19 05:20:58,976 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 14 [2023-11-19 05:20:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:58,979 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2023-11-19 05:20:58,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:20:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2023-11-19 05:20:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:20:58,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:58,984 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] [2023-11-19 05:20:59,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:59,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:20:59,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:20:59,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:59,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1882219994, now seen corresponding path program 1 times [2023-11-19 05:20:59,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:59,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272070776] [2023-11-19 05:20:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:59,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:20:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797656324] [2023-11-19 05:20:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:59,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:59,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:59,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:59,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:20:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:59,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:20:59,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:20:59,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:20:59,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272070776] [2023-11-19 05:20:59,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:20:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797656324] [2023-11-19 05:20:59,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797656324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:59,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:59,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:20:59,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333798165] [2023-11-19 05:20:59,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:59,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:20:59,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:20:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:59,352 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-19 05:20:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:59,409 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-11-19 05:20:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:20:59,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2023-11-19 05:20:59,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:59,414 INFO L225 Difference]: With dead ends: 54 [2023-11-19 05:20:59,415 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 05:20:59,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:20:59,418 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:59,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:20:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 05:20:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-19 05:20:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 45 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 05:20:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2023-11-19 05:20:59,449 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 27 [2023-11-19 05:20:59,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:59,453 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2023-11-19 05:20:59,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-19 05:20:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2023-11-19 05:20:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:20:59,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:59,458 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] [2023-11-19 05:20:59,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:20:59,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 05:20:59,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:20:59,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:20:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1881911161, now seen corresponding path program 1 times [2023-11-19 05:20:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:20:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428337661] [2023-11-19 05:20:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:20:59,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:20:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838654073] [2023-11-19 05:20:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:20:59,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:20:59,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:20:59,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:20:59,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:20:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:20:59,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:20:59,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:20:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:20:59,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:20:59,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:20:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428337661] [2023-11-19 05:20:59,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:20:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838654073] [2023-11-19 05:20:59,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838654073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:20:59,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:20:59,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:20:59,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089849625] [2023-11-19 05:20:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:20:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:20:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:20:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:20:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:20:59,843 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:20:59,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:20:59,954 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2023-11-19 05:20:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:20:59,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2023-11-19 05:20:59,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:20:59,958 INFO L225 Difference]: With dead ends: 74 [2023-11-19 05:20:59,958 INFO L226 Difference]: Without dead ends: 73 [2023-11-19 05:20:59,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:20:59,965 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 64 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:20:59,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 40 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:20:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-19 05:20:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2023-11-19 05:20:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.4375) internal successors, (69), 58 states have internal predecessors, (69), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:20:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2023-11-19 05:20:59,992 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 27 [2023-11-19 05:20:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:20:59,992 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2023-11-19 05:20:59,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:20:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2023-11-19 05:20:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:20:59,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:20:59,994 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] [2023-11-19 05:21:00,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:00,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 05:21:00,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:00,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1780722405, now seen corresponding path program 1 times [2023-11-19 05:21:00,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:00,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778721047] [2023-11-19 05:21:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:00,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:00,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850920060] [2023-11-19 05:21:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:00,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:00,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:00,229 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:00,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:21:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:00,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:00,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:21:00,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:00,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778721047] [2023-11-19 05:21:00,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850920060] [2023-11-19 05:21:00,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850920060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:00,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:00,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:00,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233476670] [2023-11-19 05:21:00,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:00,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:00,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:00,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:00,323 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:21:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:00,374 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2023-11-19 05:21:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:00,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2023-11-19 05:21:00,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:00,376 INFO L225 Difference]: With dead ends: 67 [2023-11-19 05:21:00,376 INFO L226 Difference]: Without dead ends: 65 [2023-11-19 05:21:00,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:00,378 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:00,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 31 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:00,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-19 05:21:00,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-11-19 05:21:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.375) internal successors, (66), 56 states have internal predecessors, (66), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:00,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2023-11-19 05:21:00,391 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 28 [2023-11-19 05:21:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:00,392 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2023-11-19 05:21:00,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:21:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2023-11-19 05:21:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 05:21:00,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:00,394 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] [2023-11-19 05:21:00,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 05:21:00,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 05:21:00,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:00,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash -632180213, now seen corresponding path program 1 times [2023-11-19 05:21:00,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:00,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176038521] [2023-11-19 05:21:00,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:00,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:00,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971546152] [2023-11-19 05:21:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:00,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:00,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:00,642 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:00,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:21:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:00,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:21:00,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:21:00,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:00,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:00,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176038521] [2023-11-19 05:21:00,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:00,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971546152] [2023-11-19 05:21:00,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971546152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:00,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:00,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:00,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523581111] [2023-11-19 05:21:00,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:00,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:00,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:00,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:00,755 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:00,835 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2023-11-19 05:21:00,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-11-19 05:21:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:00,838 INFO L225 Difference]: With dead ends: 70 [2023-11-19 05:21:00,839 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 05:21:00,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:00,840 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 48 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:00,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 47 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 05:21:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2023-11-19 05:21:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 59 states have internal predecessors, (69), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2023-11-19 05:21:00,869 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 29 [2023-11-19 05:21:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:00,870 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2023-11-19 05:21:00,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2023-11-19 05:21:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:21:00,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:00,873 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] [2023-11-19 05:21:00,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:01,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:01,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:01,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1877249959, now seen corresponding path program 1 times [2023-11-19 05:21:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023915761] [2023-11-19 05:21:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:01,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791283340] [2023-11-19 05:21:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:01,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:01,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:01,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:01,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:21:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:01,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:21:01,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:21:01,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:01,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023915761] [2023-11-19 05:21:01,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791283340] [2023-11-19 05:21:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791283340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399865677] [2023-11-19 05:21:01,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:01,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:01,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:01,249 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:01,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:01,319 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2023-11-19 05:21:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-11-19 05:21:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:01,324 INFO L225 Difference]: With dead ends: 70 [2023-11-19 05:21:01,324 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 05:21:01,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:01,325 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:01,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 48 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 05:21:01,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-19 05:21:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 60 states have internal predecessors, (70), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2023-11-19 05:21:01,349 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 30 [2023-11-19 05:21:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:01,350 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2023-11-19 05:21:01,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2023-11-19 05:21:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:21:01,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:01,353 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-19 05:21:01,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:01,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 05:21:01,568 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:01,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:01,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1807198543, now seen corresponding path program 1 times [2023-11-19 05:21:01,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:01,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516190118] [2023-11-19 05:21:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:01,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:01,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117378923] [2023-11-19 05:21:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:01,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:01,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:01,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:21:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:01,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:21:01,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:21:01,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:04,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516190118] [2023-11-19 05:21:04,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117378923] [2023-11-19 05:21:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117378923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [636561121] [2023-11-19 05:21:04,939 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 05:21:04,939 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:04,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:04,942 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:04,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:08,752 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 122 for LOIs [2023-11-19 05:21:08,918 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:21:08,920 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:22,339 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1596#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y~0#1_41| Int)) (and (<= (div |v_ULTIMATE.start_main_~y~0#1_41| 2) 9223372036854775807) (or (< |v_ULTIMATE.start_main_~y~0#1_41| 0) (not (= (mod |v_ULTIMATE.start_main_~y~0#1_41| 2) 1))) (or (and (= (+ (div |v_ULTIMATE.start_main_~y~0#1_41| 2) 1) |ULTIMATE.start_main_~y~0#1|) (not (= (mod |v_ULTIMATE.start_main_~y~0#1_41| 2) 0))) (and (= (mod |v_ULTIMATE.start_main_~y~0#1_41| 2) 0) (= |ULTIMATE.start_main_~y~0#1| (div |v_ULTIMATE.start_main_~y~0#1_41| 2)))) (or (and (= (+ 9223372036854775809 (div |v_ULTIMATE.start_main_~y~0#1_41| 2)) 0) (not (= (mod |v_ULTIMATE.start_main_~y~0#1_41| 2) 0))) (< 0 (+ 9223372036854775809 (div |v_ULTIMATE.start_main_~y~0#1_41| 2)))))) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~x~0#1|) 2) 4611686018427387903)) (<= |ULTIMATE.start_main_~a~0#1| 2) (<= (div (* (- 1) |ULTIMATE.start_main_~x~0#1|) 2) 4611686018427387904) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) (= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= (+ 9223372036854775809 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) 0))' at error location [2023-11-19 05:21:22,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:22,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:21:22,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 05:21:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268816538] [2023-11-19 05:21:22,340 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:22,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:21:22,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:21:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=673, Unknown=2, NotChecked=0, Total=812 [2023-11-19 05:21:22,342 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:21:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:22,577 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2023-11-19 05:21:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:21:22,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2023-11-19 05:21:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:22,579 INFO L225 Difference]: With dead ends: 81 [2023-11-19 05:21:22,579 INFO L226 Difference]: Without dead ends: 79 [2023-11-19 05:21:22,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=157, Invalid=771, Unknown=2, NotChecked=0, Total=930 [2023-11-19 05:21:22,581 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:22,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 34 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-19 05:21:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2023-11-19 05:21:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 60 states have internal predecessors, (68), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2023-11-19 05:21:22,590 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 30 [2023-11-19 05:21:22,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:22,591 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2023-11-19 05:21:22,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:21:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2023-11-19 05:21:22,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 05:21:22,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:22,592 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] [2023-11-19 05:21:22,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 05:21:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 05:21:22,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:22,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1934793331, now seen corresponding path program 1 times [2023-11-19 05:21:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41576433] [2023-11-19 05:21:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:22,827 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178664479] [2023-11-19 05:21:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:22,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:22,835 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:22,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:21:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:22,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:22,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:21:22,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:22,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:22,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41576433] [2023-11-19 05:21:22,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:22,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178664479] [2023-11-19 05:21:22,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178664479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:22,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:22,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:22,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528428184] [2023-11-19 05:21:22,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:22,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:22,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:22,946 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 05:21:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:23,170 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2023-11-19 05:21:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:21:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2023-11-19 05:21:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:23,172 INFO L225 Difference]: With dead ends: 79 [2023-11-19 05:21:23,172 INFO L226 Difference]: Without dead ends: 78 [2023-11-19 05:21:23,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:21:23,173 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:23,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 84 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-19 05:21:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2023-11-19 05:21:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 59 states have internal predecessors, (67), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2023-11-19 05:21:23,182 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 31 [2023-11-19 05:21:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:23,183 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2023-11-19 05:21:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 05:21:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2023-11-19 05:21:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 05:21:23,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:23,184 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-19 05:21:23,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:23,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:21:23,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:23,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:23,413 INFO L85 PathProgramCache]: Analyzing trace with hash -188579935, now seen corresponding path program 1 times [2023-11-19 05:21:23,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:23,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643849908] [2023-11-19 05:21:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:23,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:23,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148474519] [2023-11-19 05:21:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:23,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:23,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:23,427 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:23,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:21:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:23,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 05:21:23,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:21:23,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:24,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643849908] [2023-11-19 05:21:24,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148474519] [2023-11-19 05:21:24,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148474519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:21:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1633900250] [2023-11-19 05:21:24,249 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 05:21:24,249 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:24,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:24,250 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:24,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:26,870 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 122 for LOIs [2023-11-19 05:21:27,004 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:21:27,005 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:35,739 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2190#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y~0#1_48| Int)) (and (or (and (= |ULTIMATE.start_main_~y~0#1| (div |v_ULTIMATE.start_main_~y~0#1_48| 2)) (= (mod |v_ULTIMATE.start_main_~y~0#1_48| 2) 0)) (and (= (+ (div |v_ULTIMATE.start_main_~y~0#1_48| 2) 1) |ULTIMATE.start_main_~y~0#1|) (not (= (mod |v_ULTIMATE.start_main_~y~0#1_48| 2) 0)))) (or (not (= (mod |v_ULTIMATE.start_main_~y~0#1_48| 2) 1)) (< |v_ULTIMATE.start_main_~y~0#1_48| 0)) (or (and (= (+ 9223372036854775809 (div |v_ULTIMATE.start_main_~y~0#1_48| 2)) 0) (not (= (mod |v_ULTIMATE.start_main_~y~0#1_48| 2) 0))) (< 0 (+ 9223372036854775809 (div |v_ULTIMATE.start_main_~y~0#1_48| 2)))) (<= (div |v_ULTIMATE.start_main_~y~0#1_48| 2) 9223372036854775807))) (<= 0 (+ (div (* (- 1) |ULTIMATE.start_main_~x~0#1|) 2) 4611686018427387903)) (<= |ULTIMATE.start_main_~a~0#1| 2) (<= (div (* (- 1) |ULTIMATE.start_main_~x~0#1|) 2) 4611686018427387904) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0) (<= 9223372036854775808 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-19 05:21:35,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:21:35,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:21:35,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 05:21:35,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717820633] [2023-11-19 05:21:35,741 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 05:21:35,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:21:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:21:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=831, Unknown=1, NotChecked=0, Total=992 [2023-11-19 05:21:35,743 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 10 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:21:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:36,106 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2023-11-19 05:21:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:21:36,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2023-11-19 05:21:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:36,108 INFO L225 Difference]: With dead ends: 116 [2023-11-19 05:21:36,108 INFO L226 Difference]: Without dead ends: 74 [2023-11-19 05:21:36,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=203, Invalid=1056, Unknown=1, NotChecked=0, Total=1260 [2023-11-19 05:21:36,110 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 122 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:36,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 60 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:21:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-19 05:21:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2023-11-19 05:21:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.24) internal successors, (62), 57 states have internal predecessors, (62), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-11-19 05:21:36,119 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 31 [2023-11-19 05:21:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:36,120 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-11-19 05:21:36,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:21:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-11-19 05:21:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 05:21:36,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:36,121 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-19 05:21:36,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:36,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:36,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:36,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1551010637, now seen corresponding path program 1 times [2023-11-19 05:21:36,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:36,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533459043] [2023-11-19 05:21:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:36,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:36,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276235926] [2023-11-19 05:21:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:36,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:36,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:36,357 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:36,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:21:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:36,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:21:36,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:21:36,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:36,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533459043] [2023-11-19 05:21:36,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276235926] [2023-11-19 05:21:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276235926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:36,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:36,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:36,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352594658] [2023-11-19 05:21:36,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:36,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:36,469 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:36,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:36,518 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2023-11-19 05:21:36,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2023-11-19 05:21:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:36,521 INFO L225 Difference]: With dead ends: 72 [2023-11-19 05:21:36,521 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 05:21:36,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:36,522 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:36,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 51 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 05:21:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2023-11-19 05:21:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.22) internal successors, (61), 57 states have internal predecessors, (61), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2023-11-19 05:21:36,530 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 32 [2023-11-19 05:21:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:36,530 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2023-11-19 05:21:36,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:36,531 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2023-11-19 05:21:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 05:21:36,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:36,532 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:36,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:21:36,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:36,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash -836689437, now seen corresponding path program 1 times [2023-11-19 05:21:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:36,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744799628] [2023-11-19 05:21:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:36,750 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:36,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990022781] [2023-11-19 05:21:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:36,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:36,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:36,753 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:36,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:21:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:36,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:21:36,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:21:36,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:36,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:36,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744799628] [2023-11-19 05:21:36,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:36,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990022781] [2023-11-19 05:21:36,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990022781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:36,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652082388] [2023-11-19 05:21:36,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:36,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:36,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:36,850 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:36,997 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2023-11-19 05:21:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:36,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-11-19 05:21:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:36,998 INFO L225 Difference]: With dead ends: 71 [2023-11-19 05:21:36,999 INFO L226 Difference]: Without dead ends: 70 [2023-11-19 05:21:37,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:37,001 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:37,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 64 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:37,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-19 05:21:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2023-11-19 05:21:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.2) internal successors, (60), 57 states have internal predecessors, (60), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2023-11-19 05:21:37,008 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 33 [2023-11-19 05:21:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:37,009 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2023-11-19 05:21:37,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:21:37,009 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2023-11-19 05:21:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:21:37,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:37,010 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-19 05:21:37,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:37,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:21:37,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:37,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -966927381, now seen corresponding path program 1 times [2023-11-19 05:21:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685362750] [2023-11-19 05:21:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:37,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:37,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437494867] [2023-11-19 05:21:37,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:37,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:37,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:37,233 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:37,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:21:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:37,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 05:21:37,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:21:37,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:21:37,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685362750] [2023-11-19 05:21:37,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437494867] [2023-11-19 05:21:37,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437494867] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1942253087] [2023-11-19 05:21:37,868 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 05:21:37,868 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:37,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:37,869 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:37,869 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:21:39,014 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 69 for LOIs [2023-11-19 05:21:39,041 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:21:39,042 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:21:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1942253087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:41,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:21:41,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [7, 7] total 26 [2023-11-19 05:21:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862611277] [2023-11-19 05:21:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 05:21:41,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 05:21:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:21:41,308 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 18 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:21:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:41,940 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2023-11-19 05:21:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 05:21:41,941 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2023-11-19 05:21:41,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:41,942 INFO L225 Difference]: With dead ends: 101 [2023-11-19 05:21:41,942 INFO L226 Difference]: Without dead ends: 60 [2023-11-19 05:21:41,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 65 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2023-11-19 05:21:41,943 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 120 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:41,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 53 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:21:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-19 05:21:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-19 05:21:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 51 states have internal predecessors, (53), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:41,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2023-11-19 05:21:41,952 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 34 [2023-11-19 05:21:41,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:41,952 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2023-11-19 05:21:41,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 05:21:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2023-11-19 05:21:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 05:21:41,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:41,954 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:41,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:42,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:21:42,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:42,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash -87643144, now seen corresponding path program 1 times [2023-11-19 05:21:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:42,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567268359] [2023-11-19 05:21:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:42,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:42,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176774282] [2023-11-19 05:21:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:42,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:42,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:42,185 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:42,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:21:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:42,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:42,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:21:42,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:42,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:42,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567268359] [2023-11-19 05:21:42,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:42,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176774282] [2023-11-19 05:21:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176774282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:42,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:21:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599363149] [2023-11-19 05:21:42,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:21:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:21:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:42,314 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:21:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:42,366 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2023-11-19 05:21:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:21:42,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2023-11-19 05:21:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:42,368 INFO L225 Difference]: With dead ends: 64 [2023-11-19 05:21:42,368 INFO L226 Difference]: Without dead ends: 63 [2023-11-19 05:21:42,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:21:42,368 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:42,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 81 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:21:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-19 05:21:42,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2023-11-19 05:21:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.2) internal successors, (54), 52 states have internal predecessors, (54), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2023-11-19 05:21:42,377 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 41 [2023-11-19 05:21:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:42,378 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2023-11-19 05:21:42,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:21:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2023-11-19 05:21:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 05:21:42,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:42,379 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:42,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:42,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 05:21:42,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:42,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1578029903, now seen corresponding path program 1 times [2023-11-19 05:21:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:42,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872291322] [2023-11-19 05:21:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:42,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:42,594 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:42,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552044626] [2023-11-19 05:21:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:42,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:42,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:42,596 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 05:21:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:42,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:42,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:21:42,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:21:42,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:42,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872291322] [2023-11-19 05:21:42,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552044626] [2023-11-19 05:21:42,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552044626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:21:42,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:21:42,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:21:42,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628066529] [2023-11-19 05:21:42,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:21:42,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:21:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:21:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:21:42,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:42,728 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:21:42,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:21:42,790 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-11-19 05:21:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:21:42,790 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), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2023-11-19 05:21:42,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:21:42,791 INFO L225 Difference]: With dead ends: 63 [2023-11-19 05:21:42,791 INFO L226 Difference]: Without dead ends: 62 [2023-11-19 05:21:42,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:21:42,792 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:21:42,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:21:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-19 05:21:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-19 05:21:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 53 states have internal predecessors, (55), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:21:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2023-11-19 05:21:42,802 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 42 [2023-11-19 05:21:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:21:42,803 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2023-11-19 05:21:42,803 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), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:21:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2023-11-19 05:21:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 05:21:42,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:21:42,804 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:21:42,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 05:21:43,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:43,018 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-19 05:21:43,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:21:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1623109185, now seen corresponding path program 1 times [2023-11-19 05:21:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:21:43,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768729870] [2023-11-19 05:21:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:21:43,029 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:21:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083384113] [2023-11-19 05:21:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:21:43,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:21:43,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:21:43,031 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:21:43,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cf4d995-bc2d-4485-99e1-bcf87a29fbf6/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 05:21:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:21:43,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:21:43,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:21:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:21:43,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:21:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:21:43,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:21:43,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768729870] [2023-11-19 05:21:43,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:21:43,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083384113] [2023-11-19 05:21:43,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083384113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:21:43,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [842780824] [2023-11-19 05:21:43,250 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-11-19 05:21:43,250 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:21:43,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:21:43,251 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:21:43,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs